Is it normal that i masturbate in neighbors view?

Okay, so not in public, but I'll go outside in our pool when I'm home alone, and be in view of the neighbors upstairs windows and masturbate for like an hour. I orgasm about 4-5 times during that time. I catch one of my neighbors watching me, but he will never come over and join me. Should I ask him? We are both married, but my husband has no idea I do this. And I don't think he's told his wife. I enjoy the excitement. Is it normal to have the urge to cheat on your spouse? Should I do it? My neighbor gets a really excited face when he sees me going in my pool. I've begun to do it at the same time everyday and there he is expectantly waiting to watch me. And he knows I See him..