My childhood friend has always been very kind to me, and has grown into a beautiful girl who is popular at school! She can't even talk to girls, so she takes pity on me and helps me practice being around them. But when I don't do it well and get depressed, she worries about me. So I take advantage of her kindness and make a straightforward request for sex. At first, she's hesitant, but out of sympathy, she lets me do a "buttjob" on her, promising to only rub! But she promised to only rub, but she ends up inserting it...