Is a happy ending massage considered cheating?

Hi ladies,

My husband and I have been married 2 years and welcomed our first baby in November. The past couple of days he's been asking me how i feel about him getting a happy ending massage. (The happy ending just being a HJ). I've told him several times that i'm not comfortable with it and i feel like it is cheating. He's trying to convince me that its not because he wont ever see the masseuse again, that I should be confident and trust him, that its something he's always wanted to try and he regrets not doing these things before marriage etc. (We're quite young - im 20 and hes 22). We have a stable income, we own a house and we have an amazing little boy.. He just says he would never do anything behind my back and he doesnt want to hurt me. He's said to me that a lot of married men get happy ending massages and that i should be a bit more open minded.

At first i was completely against the idea and everytime i imagine my husband doing something like this i choke up tears. We have a very good sexual relationship and i do everything to keep him happy and satisfied so he wouldnt ever ask me permission to do something like this but he's said to me he always wanted to try it and it would be a one off thing.

Im not happy with it AT ALL but am i being unreasonable by not being "open minded"?

Our relationship has always been monogamous so this has been quite a shock to me.