Easy... Move on. If that is something you cant handle you need to step aside. Be honest with HIM and YOURSELF. Raising kids is hard work if done right... Heck... Its hard even if you arent any good at it. If moving on is out of the question then just "date" him until the his kids are grown.
Talk to your boyfriend about it. If you really love each other, he can help you make such a drastic change like this seem more comfortable. But if you still aren't alright with the situation, you might want to think about keeping a more casual relationship with him.
Hmmmm I hope u didn't meet and get involved with his kids and now question if u want to be around. u should have known he had kids. if u wanted to go in a relationship with someone with kids. u need to grow up and know something before involving a bunch of innocent people. my husband is a lot younger than m, has two small children, and my kids are grown. I love his kids like my own and they adore me. I get Mad at my hubby at times but we make things work cos we have too much invested. and he knows if he Messes up ill kick his ass
Talk it over with him and tell him your concerns. Take it one day at a time... you don't have to make an immediate decision to cut ties or stay forever! Unless you absolutely can't get along with the children, I'd let the relationship just develop.
A lot could be said here, if you k we he had small kids then why get serious if you knew that didn't interest you. My opinion is if you love that person then everything else will all come in stride, if you're allowing a major part of his life to drive a wedge between you then it seems youre not as in love as you thought.
Just talk to him Maybe you can work something out. 5 children is a lot and there aren't many women who want that. He won't be so fast to dump you if you voice your concerns, especially since you are both past your first youth I guess and that makes it harder to meet someone.
If you really love him, you should find a way on how you you can love his children because his children are a huge part of him and you as a mother should know that. So love him for him and for his children just like how you'd want him to love you for you and for your children.
I feel like if you knew he had five kids when you guys first started dating you should stick around especially if those kids likes you. Because if you decide not to be with him you not only walking out of his life but his kids life also.