If you're asking whether the maintenance of a loving relationship takes a lot of work and compromise, yes. As for 'sucking it up (implying having to take more abuse than one gives),' that's not a sign of a healthy, loving relationship. Two people who love each other don't usually get into abusive contests.
Sometimes, yes, you will not prevail when you hit an impasse. Sometimes you will. Sometimes you agree to a third possibility, of which neither of you held as your first choice. It's compromise. And it's exhausting when you've been on your own for a long time.
You do not have to "take" anything though. That smacks of disrespect. That is the worst thing too. To know you are not respected and to lose respect for the person you love.
I was going to write a long, and probably boring monologue, but I do believe TQ &TM above have hit the high points rather well ... In summary, I'll just add on average, you shouldn't be putting out more than you're getting back
