It isn't love, it's the excitement of a new relationship, the thrill of the sex, etc. Real love is more than that.
I've been in that situation. At 40, I felt unappreciated, ignored, taken for granted, etc. My husband and me didn't go out, other than to do the weekly grocery shopping. My then teenage sons needed me for washing, ironing, cooking and cleaning - I met someone who was single, and we had an affair for 8 months.
The sex was exciting, the man was romantic (complimented me all the time, bought me gifts, opened doors, all of that), and I was so swept away by it all that I lied and lied about where I was going, what I was doing, in order to meet this man.
When my husband discovered my affair, he was devastated. He cried and was heartbroken - I didn't bother. It was only when I realised that actually I didn't want to leave the family home/my kids/the security of it all/my devoted husband, that I stopped it. My husband was marvellous, he forgave me, we started going out and talking a lot. He didn't tell our sons what I'd been doing. My husband has never ever thrown it back in my face, never been nasty. We have now been together 40 yrs, 38 married. Our social life is great, we've got grandchildren, a very close family, and life is so good.
Think about how all this will affect your boy, your wife, and your home - your wife might not be forgiving, you'll be a part-time dad, and the home may be sold. Your new woman may get bored, or find someone else - and your life will be shit. THINK.