T33 .... no you are not a masochist, you will notice the reason many post and try to help is because ... well to be honest we all have been there, we know how painful it is, I know how hard detaching is ... trust me I really struggle(d) there.
So like you I really did little, had zero friends. So the GAL's ... yeah .. focused on stopping that and thats one thing that really helps.
I joined a Softball team, a football team went out and did karaoke some... heck I bought a Harley (something I always wanted and was 'not allowed' by the W .... what was she going to do D me ?? lol) and go for solo rides .. always wanted to do the group rides but have yet to wake THAT early on a Saturday ... still a GAL I want to do and thats after my W has committed back to the M.
Try Meetup ... its a good starting point.
Lets commit, list a GAL you do this week, out of your comfort zone .. thats where growth starts.
As far as the MLC thing .... at 33? ... I would lean its possible but not probable, my W was a MLCr .. not on the extreme level ... I think the telling part were the eyes, it was her shell .. but no one was alive behind those eyes, and not just talking here and there, like for 2-3 years. You can look up the 6 stages of MLC, but I never got that vibe from your W, she is most likely WW ... the DBing is the same, but the MLC lasts for years if it ever ends at all.