Compatibility is part of the chemistry for me. No compatibility, no chemistry.

I would say both! Those are important in any relationship!

I found out (for me) chemistry was more important.. compatibility is of course very important, but without the chemistry it was destined to be more of a friendship.

Compatibility.

Depends on your needs. Some people don’t have inherent desire for sex, so compatibility would be most important. As long as they have a partner who has similar needs, the relationship can be healthy. I need both chemistry and compatibility.

I wish I could answer that I have been unlucky in the past and I take the blame.You need a bit of both aswell as being great friends.

A balanced mix of these and more are needed for healthy or sustainable relationships. The importance of most factors can be different at different times and in different relationships for each person. There are usually too many important variables (that can't be quantified or compared) to make generalized statements about relationships.

It depends on the type of relationship, for one thing. Assuming you mean a serious, romantic relationship destined to climb the relationship escalator, I would say compatibility - especially in that chemistry comes and goes in a long-term relationship. If you are just looking for a hookup, fling, fwb, secondary relationship, etc., then chemistry is sufficient. Heck, sometimes chemistry turns into something more, if there is underlying compatibility that gets discovered over the course of all that... chemistry exchange? LOL.

Interesting question! I don't know if chemistry has a shelf life or not. Compatibility I think is best for the long-term chemistry is best for short term.

Communication.

I think if the chemistry is there....pretty good chance the compatibility will follow. If its just compatibility - well, you've got a friend who will come over and eat popcorn and watch TV with you......might not ever become anything more than that. I think you need a little of both to keep you balanced... ????

I think chemistry starts it, compatibility completes it.

Absolutely both and throw in communication.

Compatibility... Chemistry... Both...

I think chemistry in the beginning . . .

They are one and the same. A rose by any other name would still smell as sweet.

I would think that compatibility ..brings about Chemistry

For me, definitely chemistry... it's innate, more of a mind- body encompassing sensation, unconscious, inexplicable, but you can feel it in a very palpable way. You cannot create it; if chemistry isn't there, it never will be. Compatibility can be a process, that with effort and cooperation, can get more comprehensive over time.

For me it's easy compatibility. My late partner did not meet for 2 months (long distance relationship over the phone) when we met there was not chemistry (on her part). We agreed if we had met at a party we would not have gotten together. However, because of our phone calls, time and extreme compatibility the chemistry developed and it was amazing.

Only if I knew

Both.