He has a girlfriend, I have my principles. Could use some support.
A male friend of mine has recently confessed he might have feelings for me. He has been dating this girl for a year and has known her all his life. His peers consider them a couple. However, he feels she is in a grey zone between dating and girlfriend because she has still not explicitly agreed to be an official couple. He and I flirt heavily but we make a point of not doing anything overly "meaningful". Even quick cheek kisses are out of the question.
I do have some feelings for him but have not done anything to change the dynamic of our friendship and the amount of flirting has remained the same. I didn't respond at all to his confession. This is for the sake of our friendship, which is very valuable to me, and of my own moral principles. That said, I'm open to polyamory and open relationships but it's not something I impose upon people. Seeing how polyamory isn't mainstream and some of his words hint at his preference for monogamy, I'm extremely wary of asking him about this option. The fact that this girl - who I haven't met - had an emotionally abusive relationship before him makes the question even more volatile. I highly doubt I'll ask him about it but I can't help wanting to either.
He doesn't know my views on relationships since I tend not to share this information unless they are a friend with benefits or a serious partner. And in the same breath, I've never had jealousy or dishonesty issues come up in the past. This current situation is very new to me because of the potential for either or both. It seems best to continue being a supportive friend unless he breaks up with her.
I get the feeling that I'm dealing with the situation correctly from a moral perspective. It's the emotional part that confuses me and I'm not entirely sure about how to cope. Suggestions? Even some words of support would help.
Thanks.