Around 50 - 60 plus there were another 4 who I just had oral sex with (one was because she thought I would be too big for her, another one was my best friend of my gf at the time and my gf wanted to watch her blow me, and the other 2 were messing around type situations)
I'm 44, although I look a lot younger. Most people think I'm in my 30s. All my girlfriends/FWBs etc have all been younger than me fwiw.
50 to 60 is probably not a big number per se, but I was in a 5 year LTR and then married for 13 years, then in another LTR for 2.5 yrs.
However between 2012 and 2014 I managed to bed around 40 women. At times it was running a new fuckbuddy every week through a combination of normal "real life" hook ups and tinder. It helps that, modesty aside, I'm good looking, charismatic (so I'm told), funny and confident. Most of my friends are female so I tend to get on well and am comfortable with them on a personal level too. I'm also totally non pushy and quite cool about the chase, which apparently makes a change from most guys, who are just a bit too "thirsty".
Anyway, I ended up having a polyamorous thing for a while with two bi girls who I was both FWB with and ended up in a few other weird situations like being asked by a FWB to fuck her friend who was getting married soon because this girl and her fiancé had given each other a free pass to get whatever was on their sexual bucket list out of their systems before they tied the knot and one of her "to do list" items was to sleep with a well hung guy.
No word of a lie at any one time I was running up to 6 or 7 women at once. And they were all real hotties. I have a specific type (I'm really into black girls) and my whatsapp friends list looked like a casting call for a new member of Destiny's Child.
How did it affect me? Well. Sex became routine and tbh a bit of a chore. It felt like women were always on my case about "when am I going to see you again?". It got to the stage where I would rather stay in and watch tv than go out on a date or a booty call. It started to feel like I had a second job. My libido took a real hammering.
Then out of nowhere I fell for someone very soon after I met her and we are still together almost 12 monogamous and very happy months later (there's a pic of her in my gallery if you're interested)