I don`t think that there were any virgins on the good ship Voyager so why should he be any different.After all he wanted to fit in(no pun intended)
I think that he had sex with Charlene.After all she was his Wife.
Yes with Dr Pel,they both had the hots for each other
Not with Kes ,he would have liked to but she did not have a clue.
Not with Sam as she was a patient,which was a no,no for him.
Yes with 7 of 9 After all he did teach her to be a woman.
Most of the time he was to busy playing Dr. to think of or engaging in sex. IMHO
H200