No more children😔

My daughter is only 4 months, but I would love to have just one more child when she is about a year old. My boyfriend is determind he wants her to be an only child and doesnt want anymore children at all. He loves his daughter and wants to be close and bond with her, he said he wants to be able to spoil her and give her everything she needs, and if we have another child he is worried he wont love that one as much. Ive told him it doesnt work like that, but i dont want her to grow up lonely. Have any of you had boyfriends who said they dont want anymore and then changed their minds?