I'm not really sure who else to turn to about this. Earlier we were out for lunch with the kids, I looked over and he was on his phone, he was acting like he didn't want me to see what he was doing, I don't think he realised I was looking anyway. I saw a text "see you tomorrow, love you x" he was apparently going on a work trip for the weekend tomorrow (nothing unusual). I tried to act normal throughout lunch but i couldn't stop thinking about it. Later on DS was at nanny's house, oldest DD was at swimming and youngest DD was having a nap so i decided to talk to him about it. He immediately became nervous, started making up excuses. I told him i just wanted the truth and eventually i got it, he'd been seeing another women since october last year. We only got married March 2017, though we'd been together for years before that. He gives me flowers with notes whenever I'm stressed or a bit down. He's understanding, loving, sweet...or maybe just a really good liar or perhaps I've been stupidly blind this whole time. I'm not even sure where we go from here, whether i can trust him or look at him in the same way or if we're better off going our separate ways.