Why me.

Ok so, my boyfriend and I were having our sexy time and usually I'm pretty tight even when I'm aroused & him penetrating me doesn't hurt as much, but lately anytime we have sex it hurts because it's so big and my pussy is just to tight. I've tried everything, toys, more foreplay, to get myself to loosen up a bit. But nothing helps, does anyone have any ideas as to what else I can do to "loosen up" a bit so it doesn't hurt so bad ?