Search Results: sex with an overweight girl

Our relationship is far beyond friends with benefits. We have developed a close emotional connection. He is very emotionally attached to me. He says sex is not the most important part of what we have. We do stuff outside bedroom, we talk on social network or in person every day about everything.
Here is the confusing part. He said we doesn't want relationship 3 times before, but behaves like he is my boyfriend. Recently he wanted me to answer what I think about his personality, what is the value of him to me. He wants to do more for me emotionally, as he thinks he is of barely no use to me. He said I complete the gaps in his life and am very close person to him.
He got mad when I said I went on a date with someone else (I did). Like "If you want to build up a relationship, then you should first stop being with me". Later in the conversation he changed his position and said I can go on dates, but must tell him about it. He will leave if I sleep with someone else. He said he won't search for relationship and won't sleep with anyone else either.
He is overweight and doesn't look that good to other people. I'm quite pretty skinny girl. He knows I get lots of attention from other guys (I mostly ignore it). He sometimes says I'm better than him. He thinks of himself as an "old piece of shit" (exactly what he said), so has low self- esteem. He said he doesn't want relationship because he doesn't think he has enough resources for it, since when he is in one he does everything to that person. But he wants to make me feel the same good as I make him. He hasn't been in relationship for over 2 years, doesn't emotionally open to any people (except m somehow).
I don't care what other people think of him. For me he's amazing. If he has no feelings for me, I'm probably just gonna leave things as they are, as it's better than nothing. I'm scared to confess, as he said he doesn't want relationship. I never told him I really want one.