<human>: Can you give me the gist of the text in a nutshell?

Matt and I have been best friends for over 30 years. He started dating a much younger woman, Claire, a few months ago. I thought it was a bit weird because of the age difference but I felt like it wasn't really any of my business, I just told him I thought it was a little strange but whatever, do what you want. I finally met her last night and she seemed like a nice girl, we got to talking when Matt was out of the room. I mentioned something about him going back to our hometown for his mom's 80th birthday and she said "how is his mom 80 if he's 32?" which really confused me, until I realized he's lying about his age to her. I just said oh I must have gotten the age wrong but I couldn't make much of a recovery from it. To make a long story short, she got pretty pissed and broke it off. I told him I thought it was a pretty scummy thing to do to lie to her like that and that I wouldn't have kept up the lie for him anyway because I felt it wasn't right. Now Matt is accusing me of intentionally sabotaging his relationship because I'm "jealous" since I'm divorced. I'm also just feeling very conflicted here...I don't want to throw away decades of friendship but I don't think I was wrong here, especially since I didn't purposely do it.
<bot>: Best friend lied to his girlfriend about his real age, I accidentally spilled the beans, is there any way to salvage our friendship...should I salvage it?