Question!!!!!

I've took three pregnancy test two of which are positive!! One of which showed negative but someone said it was a bad test! Well here's the question... my boyfriend and I have been together for a while and he has two kids I have one..we both talked about having another one.. When I took the test and they showed positive I was super excited. I told him expecting him to be as well.. and he told me I should give it up for adoption! What should I do... now he is telling me we will work thru this and keep the baby! Should I trust that he will be there for me and our baby????