I (28M) love my best friend (27F). Should I tell her?

r/

Hi guys. So, my best friend is married, but her marriage does not work well and she says that seriously thinks about the divorce and that she is going probably to do it. Since her problems started, I was thinking about her more and more and realised that I love her. And I really love her. We are friends for years and I always felt great with her but I have not been looking at her that way.

Now, I do not know what to do. Should I tell her if she gets divorced? I do not want telling her anything while she is married, well, because I can’t. I wish to confess her if she breaks up. But, I think she is going to say no. Now, if I tell her, she will lose both husband and best friend in a short period of time. And I am probably going to be an asshole. But this is taking too long already I can’t live normally anymore. If I wait for too long, she is probably going to find someone else, and if I tell her then, I will probably be an asshole again because “I can’t be happy for her”.

I do not want to lose her, but if I tell her, probably I will. And to be honest, I can’t be friend as I used to be anymore.

What do you think I should I do? Thanks

Tl;dr: I love my girl best friend and I do not if I should tell her or not