What's the most important factor in a relationship

Communication, trust, understanding, love

Trust and communication are a must to keep the relationship going.

all of it, but I put communication, trust and sex

Communication is the biggest factor in good relationships for me. When you have that, it's way easier to work pretty much anything else out.

I hot body gets me looking, but trust and communication keep me interested.

trust is most important

I said trust, but I think romance is a big thing too, my partner is lacking and I'm starting to feel not as intense emotions for him

Some combination of trust, communication, and good sex.

trust

Communication and trust are the backbone of my relationship which makes the sex so good

Trust followed by communication

A big thing for me is the combo of trust and communication. I need to know that I can trust in him to listen to me and communicate his feelings with me.

Definitely trust.

I usually don't do things like this, but I had sex with my current boyfriend the first time we were alone together. I think this was actually the day we started exclusively dating. I couldn't believe I moved so fast without knowing that much about him, but for some reason I genuinely though I could trust him, I could see that he was nervous around me, and I made the first move!
Now we have been together for over 2 years. Sometimes we have to work on communicating before we automatically get angry at each other, but I trust him, understand him, and I know that he values me more than anything else.

We haven't had the longest relationship, but I have this deep feeling inside that it's going to last and it has been there since day one.

Without trust there is nothing....