babymama trouble

My boyfriend of 5yrs took his kids and thier mother on a camping trip and 4wheeling(without telling me)now i find out its been a few times.he now wants to take me riding.what should i do?

whats the harm,its okay.If you do not wish to do it just say no.

I fell like i shouldve went along the first time.or he shouldve atleast told me

The thing is; it is great that he is still involved with his previous family. As long as nothing is going on between him and the mother, then there is nothing wrong with him being present in their lives. Even though he is in a relationship with you, he is entitled to spend time with his children. If he didn't want to take you along there is no big deal, you are not their mother and it would probably be weird for his children and the mother.