give me one reason to stay here

My mom was just on the phone with her boyfriend, and after their conversation was over, she said "I love you, too." I have no idea what I should be thinking right now. They have only been together for about a month, and she isn't even legally divorced from my dad yet. I miss my dad so much. I feel so bad for him. I wish I could live with him, just so he wouldn't be alone. Ugh. What the fuck?