I don't feel like myself. Could it be because of "love"?

Wow, sounds just like my ex who is 39. His life didn't turn out how he wanted and he was very negative. It sounds to me like he is using you for sex, if he loved you truly you'd never have to doubt it (this I now know.) Trust your female intuition and move on like you want to, there's no way a man twice your age can respect you like you need (though I know how NICE it is t date someone much older because young dudes are not serious enough... maybe aim for a 28 year old) You're still young and have much growing to experience. Life is long, enjoy being young and making mistakes (it's how we learn.)