2 years ago, the gf decided to reject my marriage proposal to run her startup. We broke up.

Fast forward, the startup failed and she wants to marry me NOW.

History of: drunken cheating, drugs with married men, virgin before me

I dont enjoy sex with her though. Its rather painful for her and i dont think sexually we are compatible or that its mind-blowing.

Spouts heavy feminism and career first bullshit. Jokes about "getting a child popped out and pay me a mil in child support per year and you can fuck off "

Should i tell her i dont want to get married or what?

I dont want to break her heart. But I dont think she really loves me deeply ( inspite of me being her first ), she just wants a good looking fit enterepreneur for a husband and then back to chasing career to replace her self esteem.