I have named changed for this as I am on another section of this forum and very identifiable but have been on here for many years.
I have really messed up and dont know what to do.
DH and I have been having marriage issues for years, we get on very well, like spending time together and do lots of great things, we share mutual interests as a family so spend a lot of time together however we haven't had sex for several years since DH struggled with getting an erection (he is a fair bit older than me but not old enough it should be an issue I guess) and we have ended up in a rut of him being worried about it not happening and me not wanting to instigate anything in case it doesn't happen then both him and I feel awful about it. Sounds pathetic but as time has gone on it seems harder to address so we have ignored it. I don't not fancy him but I don't feel like I want to have sex anymore as it's been so long. I generally have a high sex drive though but I have accepted it's my life.
At our mutual interest we are heavily involved in the running of it, the kids are part of it and we are close friends with lots of the people. Its a very family feel generally, we all socialise together, there is lots of banter which can get flirty but generally openly so it's just a laugh between everyone.
Recently one of the people there has started to get a bit flirty towards me, we ended up chatting via message as we genuinely had to arrange some stuff but the conversation took a turn from his end, stupidly I did respond but it was just a joke from my end at first as he is so much younger than me so didn't take it seriously but it ended up more that that. It was pretty intense and I have no idea why I even responded, it is not me at at all, I have really strong feelings about if you have to hide something from your partner you have gone to far. There's no black and white for me until now.
Anyway this went on a while and ridiculously we met up and had sex. I am literally sat here with no idea how it happened, he is 28 and I am 41, I know I got caught up in the fact that someone was actually interested in me, I guess I am fairly up together but not anything special, any interest previously (not loads but the odd time over the years) I have completely ignored. I have no excuse whatsoever for this, it's not like we were drunk on a night out, we did this with very little thought for anyone and after we are both mortified about it. It definitely won't happen again but I can't even look at DH and god knows how I will face the OM next week.
I guess my question is do I tell DH, this will cause an enormous upset not only with my family but with all our friends, it would be a huge blow up that I want to avoid of course but is there any way forward with this without saying anything. It 100% is over, neither of us can deal with feeling this guilty. I know it's not about my feelings of course now.
I do know how awful it is, I don't need to be told this, I appreciate I don't deserve for anyone to be nice about this either, I woke up today actually in shock that I did it, I feel sick and on the verge of tears constantly, it makes me feel even more selfish as it makes it about me when I am feeling like this. I have told DH I am ill which he believes as I do suffer from regular migraines.