Older men and Me

Ok so I’ve been trying to date older men for a while I’m 17 years old. And I mean sometimes we get very connected all of a sudden they disappear. Block me or just ignore me. And all the time they say they love me but since I don’t get told that often. I get emotionally attached and be ready to stall in love. But I end up getting rejected and then I feel down and sad that im not really worth anyone’s time.