I agree, I think if I can't seem to settle and feel relaxed, there is no other way. I've only just had my suspicions confirmed, though, so it's still raw. With advice on here and a few days to digest the information, I'm starting to wonder if ending things would be a mistake and the easy way out. Advice on here seems to reiterate that he's 'done nothing wrong' by liking another person before me. My rational head knows this is true, but because of it being someone I constantly compare myself to, it's sooooo much harder to digest and accept. Of course, it's not his fault that I feel this way about my friend. That's my issue, I need to own that. They were both single and she's a lovely, attractive girl.
I do believe him about his feelings towards me; I don't think I'm a 'consolation' prize. The issue is more me not being able to imagine that he's thought of my friend in a romantic way. It just hurts. It's less about him and more about how much I can take given this new information.