I know this thread has taken on a different life a little bit, but to address the OP - CatsNTats, just wanted to say that there may be a couple simple explanations for why you're feeling particularly horny.
1. This one is more general and applies to both genders. When you're stressed/anxious/depressed, your body steals the hormones that would normally go toward making sex hormones (testosterone, estrogen, progesterone etc.), and instead puts them toward producing stress hormones, namely, cortisol. Basically, your body shuts down its sex drive because it perceives a "threat," and sex is not an essential function to survive whatever that threat is.
Infidelity is one of the most stress/anxiety/depression inducing traumas that someone can live through, so it stands to reason that our bodies would shut that shit down. Remove the stressor, and it's no surprise that your sex drive sky rockets.
2. This one is specific to women. I don't want to assume anything and potentially offend anyone, but I'm guessing that at 37 you haven't hit menopause yet, which means you're still ovulating regularly. Well, our bodies release hormones specifically when we are ovulating to make us horny as hell! Our bodies want us to get pregnant so damn bad, that we get super horny during the time when we are most likely to get pregnant - basically the 5 days before ovulation, the day of and the day after. So you get a week of crazy dick-seeking feelings. When XH and I were trying, I could practically predict when I was ovulating based on how horny I was.
If you track your periods, you'll notice that a couple of weeks before your period is when it happens. Don't be tricked by people who say exactly 14 days, as everyone's luteal phase (the time between the day the egg drops and the first day of your period) is different. And can actually greatly be affected by stress hormones, which is why being stressed and trying to get pregnant don't go well together.
Some women, like me, get cramps during that time too. It's only on one side, because you only ovulate from one of your ovaries at a time, and it will be different depending on which one you are ovulating from that month. You'll notice you're more "wet" during that time too.
I was horny as hell in my 20s too, but I didn't know all of this back then. I bet if I went back and tracked when I was most active it probably coincides with my ovulation.
I'm not interested in dating yet for some of the same reasons listed here - don't want to use people, don't want to put in the effort to trust someone enough to build any kind of meaningful relationship, but also scared of STDs from easy hook-ups. All my FWBs from my early 20s days are married or in serious relationships now. Also, a side note, but not completely irrelevant, I'm really not thrilled that I'm going to have to start using condoms again... another fun bonus gift that infidelity gave me
I do take these feelings as a positive sign that my fuck-the-shit-out-of-someone button wasn't broken, it was just disabled when my body went into self-preservation mode because of my douchebag ex.
Anyway, just thought that might be useful information to you. At about the 6 month mark after DDay/separation, I started getting super horny again, in these fluctuating patterns, and I was able to pinpoint it to that specific time of each month. Now I just know that there will be a few days where I have to take care of myself.
In fact I'm considering getting a new vibrator for that purpose - my old one shot craps about 2 years into my relationship with my XH and I just never got a new one. Of course it would be nice to have some human contact, but I just don't think I'm ready for that yet.