I (26M) am married (24F) but am in love with another woman (30F)

This is my first post ever, so hopefully it goes well.

I (26M) grew up with my wife (24F) let's call her Amy. Our parents met when were 2 and 4. We were close growing up, but lost touch after her dad walked out on her when she was 10. We reconnected off and on throughout our teens and started dating when we were 16 and 14.

Fast forward to today. I love Amy dearly, but I feel as though we are not compatible for marriage. I am generally considered to be rather intelligent and mature. Amy is not as gifted academically nor in maturity. This has caused some issues throughout our relationship, but I was young and in love. Amy and I have 2 children together (2F) and (5F). I am an amputee from a motorcycle accident and Amy has a seizure disorder that was developed at the beginning of the year. I am a successful business owner and have had the ability to hire Amys best friend Dan (24M) to help take care of Amy during her seizures. Dan is married but separated. Him and his wife coparent and remain friends. They also live with us, but in their own separate area (Think duplex) with their 4 children. He is a great guy, helps with Amys medications and doctor appointments etc. During the time that Dan has lived with us, I have realized that Amy and I don't have much in common.

My wife and I both are involved in our church, and work with the teenagers. The other woman (30F) let's call her May has recently begun teaching with us as well. I have known May for 4-5 years now, but we are both very introverted and had never really gotten close. I had always thought she was attractive, but that was the extent of it. She is friends with Amy and has been for the past 2 years. Once she started teaching with us, I started to realize how amazing she was. We had the same type of humor, intellect, competitive nature, philosophical views etc. May is also married but has had a rock marriage.

I am in love with May. I feel so guilty and confused about it because what I feel about May I have never felt about Amy. I do have a suspicion that Dan and Amy have some feelings for each other. I feel as though Amy and Dan are better suited for each other. I also love Amy though. We have an established life, kids and consistency

I don't know what to do and would like advice, especially from someone who's been in a similar situation.

TLDR: I am married with kids. Marriage has been rough for a long time. I fell in love with another woman who is also married with kids. My wife's friend moved in as a caretaker for my wife while she deals with seizures. I think my wife and her friend have feelings for each other.