Too much thinking OP, your going to drive yourself crazy, relax, overthinking and over-analyzing is never a good thing.
Women act and think emotionally, men act and think logically, so what's the logical way to handle this situation?
Move on, if you can handle fvcking her without getting all emotional which we all know is not the case, then go for it, meanwhile, date other women.
Also, as much as this hurts, you have to not care about her and other men, remember shes not your gf so it's none of your business who's shes fvcking ect my question to you is why aren't you doing the same?
You dont need advice, you just need to move on, sure it sucks but hey, your 45 right? I'm sure you been through much worse so your gonna have to suck it up.
And please OP, dont do the passive aggressive bullsh!t and all that stupid no contact and waiting for a certain amount of days before responding to her ect, sh!ts corny......
Forget about her for now and If shes really into you then she will come to you, if not then oh well, sh!t happens.
And hey, if you insist on her being your girl then be a man and take the lead and make it happen, who cares how it looks, real men dont worry about sh!t like that, real men dont use game or sit and hope for the woman to come to them, they just do whatever the hell they want.......dont do what we tell you to do, your 45 and not getting any younger, your a grown man, do what you want.
I wouldnt do it but it's a another option for you, I know guys who can pull it off because there ultra confident and dont give 2 sh!ts