Love given to gf forcefully by her ex-bf.. Is it possible ?

I have plans marrying my gf later this year. My gf and her ex-bf are very good friends now. Once she told me that this was the last time she is gonna see him as he is moving to a West Coast. The guy had come over in this town and was staying with his uncle. She went there to talk 2 him. She told me that her ex-bf first kissed on her cheeks and then forcefully gave her love bite on her neck. I can’t buy it as I think its not possible as if she would have tried to resist it, she would have moved her neck and her body. She told me that he was too physically powerful on her. I feel she willfully took it , which is betrayal to my Love. Last night I saw a pic of ours during that time, and I saw 2 love bites, other one was below her collar bone. To all guys, plz tell me is it possible to give someone a love bit forcefully and to all my girls, plz tell me is it is it really possible that u can’t avoid a lovebite. i love her too much to let her go and can't live with her as she broke my trust.