I'm gay and I hang around with boys a lot, one of them loves me he admitted it.?

I'm a girl, I came out to 5 of my boy mates that Im a lesbian. But since then one of my bestest friends in the group has been acting weird around me I ask my other friend why he is being like that but they said that I should ask him. I confronted him about it and he shouted really loudly that he's in love with me. I didn't know what to say and I felt guilty that I can't love him back, I excused myself from the situation and went and hid in my private space just to think. I feel really bad about not talking it through with him but when I look at him I just feel guilt about not liking him that way back. Do you think we can ever get over this. What do you think I should do?? I love them all equally. Help. I'm only 15.