How do I fix myself

Linnoue
My mom has always told me that im extremely cold. I just kinda let it go because she has a temper and i just never deal with her. But I realized that i have a problem. My bf always tells me that I don't give him love and im not affectionate. Ik it hurts him a lot but part of the reason i was like that with him is because my family thinks he is not good enough for me. I love him tho and sometimes I doubt because im not sure if i can love . This morning my mom told me again and my sister said the same thing. I really hate that about myself but i can never bring myself to change it. Please helpp because I don't wanna lose my family or my man😩