I can walk down to the local gas station right now and grab some flowers and snacks. Doesn't mean jack shit.

Some people make really great friends - and terrible partners. He's 30. Chances are its pretty set in stone at this point. This is who and what he is. Non-commital. He had a go at being monogomous and it took him all of a few seconds to start fucking around. What he wants is a stable partner, who will turn a blind eye to his nonsense. He tried you out. You didn't like it. One things for certain though, he might like you a whole lot, but that man does not love you.