I mean, on the absolute highest fucking level sure, but there's an absolute ton of shit that can get in the way of that desire working out harmoniously, and that concept has vastly different meanings to different individuals.

Love can conquer all, but love alone is not enough to keep things working happily in the real long term.

Kids, no kids, how many, when?

Exclusive, non-exclusive? Is exclusivity emotional, romantic, sexual, physical, all of the above, or just some subset?

Religion, none, which? Okay with your partner having different religious beliefs than you? Open to conversion? Expect them to convert to yours eventually?

What does a committed relationship mean to each member? Spending the a lot of your time together? Just coming home to each other at the end of every night but primarily living your own lives?

Opinions on alcohol, drugs?

Do they expect you to have a relationship with their family and/or friends? Do they expect you to give up other relationships with friends of the opposite gender? Do they expect you to be okay with them remaining in contact with exs?

Any dealbreakers? Any baggage that they need to be aware of?

None of that shit is day 1, or important to every relationship. Not all of those options are reasonable, some are abusive. But it's all different shit that I've seen cause big fucking problems in relationships.