To start, I hate the term "relationship goals." Mostly because every relationship is different, & if your goal is to find what someone else has, then you're setting yourself up for failure. Every person is different, so every relationship has to be. What works for you isn't going to work for someone else. & that's okay. That's actually good.
Second, I mostly see the term "relationship goals" after a proposal or engagement. I see & hear lots of comments about how they hope to be so lucky one day, & want a story like so-&-so's, & hope their own moment is perfect, etc. There is so much build-up around the proposal, & then the engagement, & then the wedding planning period, & then the wedding day.
& then nothing.
Don't get me wrong, proposals & engagements & weddings are SO special, & there is absolutely nothing wrong with daydreaming about your perfect proposal or wedding. I truly hope that if you are in (or near) that time in your life, you appreciate every moment, because it goes by SO fast (in my experience, at least). Your proposal will be a blur, your engagement will seem to drag on forever & then suddenly it's flown by, & your wedding day is just a constant string of events, & it's all over before you realize. Slow down. Think about each detail. Take time away from everything, just you & your future spouse. Make memories - Don't focus on the tasks.
But realize that none of this is the ultimate goal. The ring is not the end game. The wedding is not the end game. It is only the beginning. Focusing on these events as your main goal sets your relationship up for disappointment once they're over. The excitement of planning a big event dies down, & you settle into your daily routine. You move past the wedding & into the marriage.
No matter how long you've dated or known someone before you get married, marriage changes things. You are fully committing your life to another person, & their needs become more important than yours. You realize as soon as you marry someone exactly how selfish you are. You may have taken steps towards this commitment in dating & engagement, but marriage is the real deal. You will be working every day to be better - to be more for your spouse.
It's a constant effort, & there will be bad days. There will be days when they fail you, & you feel betrayed, or hurt, or angry. There will be days when you fail them, by being cranky, or irritable, or lazy. There will likely be days when it takes everything you have to push through the negativity & make an effort. But you remember that you made a commitment - for better or for worse - & marriage is forever. Some of the best advice we got in our pre-marriage counseling was to never even say the word "divorce." Don't put it on the table. If it's not out there, it will never be an option. You'll find other solutions to your problems. But once it's out there, you can never take it back, & it will always be an option.
That doesn't mean it's all hard work. There will be good days, too. Hopefully many more of them! Days when you try new things together, when you spend the whole day watching movies in bed, when you laugh about the dumbest things, when you do childish things together. I am thankful to have married my favorite person, who takes care of me in the tough times, pushes me to constantly keep working towards bigger & better things, & has lots of fun with me in the good times.
The one thing I hear most often when talking about marriage (from those who are happily married for years, from those who are just starting out, & from those who are no longer married) is "it wasn't what I expected." & that's so true. Marriage isn't going to be what you expect. It's not going to be the happy ending to your fantasy relationship. It's not going to be just like dating, but living together. It's not going to fix any of the problems you had in your relationship. It's not going to be cheaper, or easier, or probably any of the other things you planned. But if you work at it, & keep God first, it will be worth it. It can be a great, amazing, rewarding partnership & relationship. It can be better than you expected. But it does take work, & it does take time.
I am not saying these things as an expert. I have only been married about 4 & 1/2 years. I have learned a lot in that time, but as I said, marriage is a constant effort, & I am constantly learning more.
"Relationship goals" is not the cute high school sweethearts who have been together a few months. It is not the blissfully, newly engaged couple. It is not me & my husband of less than 5 years. It is Jesus & His bride, the church. If you want an earthly example, look towards Godly, Christian couples who have been together for decades. See how they've not only made it work, but also stayed happy, in love, & faithful to God. Take their tips for marriage & see how they are applicable in your own relationship. See how their advice fits with Scripture. The goal is not "Will you marry me," but "til death do us part." The wedding day is so special, but it is the first day of the rest of your lives together. Focus on the life, not just the day.
"Wives, submit yourselves to your own husbands as you do to the Lord. For the husband is the head of the wife as Christ is the head of the church, His body, of which He is the Savior. Now as the church submits to Christ, so also wives should submit to their husbands in everything. Husbands, love your wives, just as Christ loved the church & gave Himself up for her to make her holy, cleansing her by the washing with water through the word, & to present her to Himself as a radiant church, without stain or wrinkle or any other blemish, but holy & blameless. In this same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself." - Ephesians 5:22-28