LOOSING MY VIRGINITY

I had sex with a guy i met online. And that was my first experienced / when i loose my virginity. I felt so curious that time about what is sex feels. It was not that smooth i didn't tell him that it was my first till he notice the blood from me. And that was just a one night stand, i don't even stay in his place because i feel soo confuse and feel bad about what i'm doing.

The second time i had sex was with the guy that i met online too. I'm kinda want to know more and feels like 'who cares i'm not virgin anymore'

And with this guy we've been sexually active for about 3 mnths. 

But since the first time i did it. I never feel like i really want to do it. 

And now i decided to totally cut my connection with that guy. 

And what left is the guilty feelings and i feel's like shit for sleeping with someone who not even my boyfriend. 

And i know inside me i can't forgive my self for what i've done. 

Please anyone give some advice/ comments. 

Thank you