The way i see it:

You are looking for acceptance and validation
You don't want to be alone
Trust is an issue
Emotional abuse (where there's smoke there's fire)
You are dependent upon him
You are young and relatively inexperienced in an adult relationship

Yes im very negative. But i was once 16 with no friends and would have gladly accepted some attention from a boy. And i would have clung to it. I did have a relationship and family of my own by 19 and it was vey abusive. When my daughter was your age she went through the same to. She was stuck in an emotionally abusive relationshipfor 8 years. What a waste. I don't want you to do the same. This is a topic very near to me.