Should I tell her how I feel about her boyfriend Sorry its long!?

My best friend had her friend from Wisconsin at her house. She paid for his plane ticket to Vermont because she really wanted to meet him in person. They'd been talking to each other online and through text for the past three years They had an online relationship and he was always telling her he loved her. However, when he got here he never once tried to make a move on her. Instead, he flirted with all of her friends right in front of her, including me, and ignored her when there were others around. When she confronted him about it, he claimed he would never hurt her like that yet continued to flirt with her friends. My friend, being totally smitten with him, let it go. This ticked me off because he told her he loved her in their phone calls but he didn't make a move on her for the entire ten days he was here. He also tried driving a wedge between my best friend and I by saying that I was "putting ideas in her head" about him hitting on her other friends and that she shouldn't listen to me because I was trying to push him out of the picture. My best friend had been hurt before by boys like him that used her niceness against her for free stuff and someone to push around and I was wary. On the day of his flight home, my best friend was in tears and even then he didn't kiss her goodbye or tell her he loved her at all. Once we were in the car, he sent her a text that said "If Lisa hadn't been there I would've kissed you goodbye." I felt that this was a total cop out and a lame excuse for not loving and treating her like he claimed he did through texts. I was really angry. She spent tons of money on getting him here and he was supposed to be her boyfriend and he never kissed her, hugged her or even held her hand. It made me pissed that he used my presence on that the final day as an excuse for not kissing her when he had and entire ten days to do it. My best friend wants to know if I think she should keep talking to him. I think she should drop him because I feel he just used her for a free trip. Should I tell her that or am I way out of line? She thinks he might've used her too but I don't know if I should confirm her fears. What should I do?