Coparenting is so hard 😭

Coparenting breaks your heart and there’s nothing you can do about it because you don’t want to child to know that it makes you sad when they ask for extra time at the other parents house. Of course I always do it because I want him to be happy. They have 2 other kids around his age that he can play with and I can’t give him that at home. He is 9 and I have a one year old at home. He’s a great big brother but understand he has a lot more fun playing with others around his own age 😭😕 anyone else feel this way?