new generation

i am 16 year old
when i was 14 i engaged in sexual intercourse with one of my friend
that first time was very painful for me but when i did again and again
i started enjoying it very much
but today i am 16 year old and sex has become necessity for my life
in starting boys requested or forced me to do it
but today i forced guys to do it
it is happening wrong something with me? or it is normal?
please friends help me!!!