I would be all for romances ONLY IF and I really mean ONLY IF certain things are done.
1. Be able to break up. Weither thru violence, words, or whatever. Don't make them essential, don't have anyone essential whatsoever.
2. They leave you and snatch all or some of ur stuff if u are gone to long. Examples-u don't come back to the place in 2 weeks, u don't talk to them in 2 weeks, etc. u want relationships, well there u go. Most people in their right mind ain't gonna stay in a relationship where they are ignored. U want romance, well u can, but don't expect it to last if u don't commit.
3. They have an allowance. Every week they take such and such amount from ur currency. Certain partners will require a small amount and then there are the gold diggers or people who are used to a certain lifestyle and will want to continue the same lifestyle.
4. They have to be able to nag. U come by the house maybe once a week and give her a simple "hello" and go to sleep, dump ur stuff, and then head out for the next adventure, they need to start nagging you. Even have them eventually wake u up during ur sleep or eventually get to the point u can't even sleep or rest or wait near ur home until u spend some time with them.
5. Have messy breakups. U don't spend enough time with them, they haven't gotten their allotted allowance for some time, etc etc, then u should get a chance encounter with said partner as they are yelling and screaming at you. Have them start throwing things. Like if they are in process of leaving, that gear they took with them, they should start throwing the stuff at you. Mass amount of scrap metal and u have dressed ur place up to how u like it, to bad. Ur place is gonna be a mess with scrap metal being thrown everywhere. Lord help u if u stockpiled a bunch of grenades hehe. Also any companions should not help you in this situation even if u attack them, instead have them back away and say stuff like " dayum, um I'm gonna head down to the bar while u sort things out" or " well ya did have it coming" or "I'll them them off ur hands" etc etc.
Give us that and I will preach to have romances in games and maybe just maybe, we will get less people asking for romance in "adventure exploring games". Just maybe. I'd be happy either way.