<human>: Can you condense the text into three sentences or less?

My daughter is turning 17 next month. I've suspected her and this boy (17m) of liking each other for a few months now. Let's call him Jack. She is not allowed to have a boyfriend. 

Yesterday I was going to take her and her friends, including Jack, to an amusement park. When i got home, i went to her room to look for her and as i was halfway in the door, Jack stumbled out of the bathroom with his pants around his knees. We stared at each other for what felt like years as he pulled his pants up and said "Hi." My daughter was in the shower. 

I went into the bathroom and told her that i knew and waited for her in her room. When she came out, she tried to lie saying that she was in the shower and didn't know what he was doing. She suggested that he was changing out of his football uniform but he was putting on jeans?

I knew she was lying and i told her to not be cheap. She is a straight A student but i told her that that's not all that matters. What do i do?
<bot>: I arrived home to see my daughter's friend (17m) with his pants around his knees outside the bathroom where my daughter was showering. Is my reaction ok? What do i do?