My boyfriend is unhappy with our relationship because i don't have any desire for sex due to my only experiences with it have been painful. i'm lost.

See your gyn doc: Painful intercourse is caused by a variety of sources including dry vaginal tissue, infection ( esp STD's), trauma & psychological problems. It is a normal response to avoid things that are painful. No surprise that you have lost your desire for sex. See your doctor for help finding the source of the problem & develop a treatment plan to include learning to trust your body so you can enjoy!