I say this as everyone was looking at my behaviour and dealing with that, noone went deeper, no one asked how I felt, did I really feel good about myself, how did I feel about my life, was i happy.
I am caught between a rock and a hard place here I have the welfare of my daughter to consider but also the happiness of my family and right now we are not a happy family.
Ask your daughter about how she feels about the boyfriend and how he feels about her.