Check this out brother:
https://watchthegap.wordpress.com/2007/03/21/little-children-book-vs-movie/
In the book "Little Children" by Tom Perotta, which I read and really liked, long before the film with Kate Winslet came out... the husband has a secret porn addiction and is obsessed with a MILF like yours, who goes by the name "Slutty Kay"... well it turns out she doesn't just sell/post photos, she also sells things like, her used underwear... which she puts in a ziploc bag and posts to her fans... I think she even has an annual "meet Slutty Kay" event where her fanclub (which is like 50 guys) hang out with her and take her to the movies and stuff, you can also get a one-on-one date with Slutty Kay if you're really really lucky.
Anyway, so your MILF may have a similar game plan, she actively engages with her fans including you. But that doesn't mean you have a chance with her. She has to remain detached and view you as a wallet, even if she does really like you. (Otherwise she couldn't be successful in her chosen industry). So I would basically forget about her. Also you're starting from far behind the 8 ball, since she knows you're a porn addict, and therefore by definition not very successful with women. At best you could probably become friends with her, if she likes your personality, but she's never going to be all that attracted to men that she leads.
Don't think I'm judging because I've been exactly where you are. For instance about 2 years ago I had a Tumblr blog on which I would repost photos that I liked. Most of them were not super explicit, just girls in sexy lingerie or partially nude... this activity kind of escalated so I would be going more and more hardcore, like looking through collections of girls with tatts (like SuicideGirls kind of thing) and girls with piercings, particularly nipple piercings... and would also escalate some more so I was at one point scrolling through pages and pages of stuff like lesbian or gay sex, stuff about violating and degrading women, pictures of dicks, anything, any kind of novelty to get that dopamine hit, that was forever elusive, since I was masturbating to porn like twice a day and becoming pretty desensitized to it all, kinda jaded...
So, you need to cut this out brother, it puts women on a pedestal and makes them unattainable to you, and it means you will not be able to get hard even, when you have the opportunity to have real sex. Because there's just no way it could be freaky enough, and also if your partner actually tries to interact with you, it will frighten you, because it won't be what you're used to. This is what happened to me at least. I've been porn free for about 9 months now and haven't looked back, I fucked 5 new girls so far this year and have several current girlfriends and more female attention than I can handle, you can do this too, and you'll have absolutely no need for a site that collects pictures of some MILF you're obsessed by. If I were you I'd take that site down, delete every skerrick of porn on your hard drive, and start working on approaching some women. Likely it will take a decent amount of time to undo the damage, but if you start now, then you'll know that you're doing the best you possibly can for yourself and your love life
Ray
