Guy's Behavior

Hit on my friend?

In the past I went through a situation where the guy I was dating, asked for my friend's phone number while I was in the bathroom. She told me as soon as he asked her, like she went into the bathroom and told me. The current boyfriend I have knows about all this and the hurt that I went through because of it. I asked him if he would do that, like in asking my friend (s) for their number if I was in the kitchen or something and he said, no he wouldn't do that. I asked him why, and he said because she could easily tell go and tell me about it since she told me about the first guy. He also told me that he wouldn't do that because he's "a good guy." I felt like he could've said an answer Iike "I wouldn't do that because Im with you and I love you" or something like that, but he didn't. I told him I felt like he could've responded a different way and he said that it doesn't matter what he said because he wouldn't cheat on me. Should I be weary of his responses to me? Does it seem valid to you that he wouldn't cheat? What do you think about him saying he wouldn't ask for my friend's number because she could tell me about it?

Updates
4 mo
I don't if this makes a difference, but he was high and drinking when we talked
Hit on my friend?
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