<human>: Can you provide a brief rundown of the text in within 3 sentences?

Last night, my girlfriend and I were having sex in her room. We are both 19 years old. Usually we wait for her parents to go to bed and when I came back to the room I told her her dad was still awake in the living room. She said it was okay because he wouldn't come in if the door was closed.

The door was closed and he came in. He saw it all. Said "ugh nice" in a disgusting manner. Then he called her phone and told her I should leave. When I was leaving he was downstairs and I didn't say anything, just went to my car.

He then came out at my car and proceeded to yell at me in the driveway. Saying stuff like "I get the sex part of it but in my house?? Do you not see how fucking disrespectful that is? And this isn't the first time. I found a fucking condom in her room a couple weeks ago. I'm not going to tell her mom because if I did she would come after you. With a gun. Now go home and never come around here again."

I then left. I talked to my girlfriend about it and we decided I should call him today. I gave him a call and he didn't answer so I left a message saying sorry and that I wanted to talk to him to explain myself. Still no call back.

I just don't know what to do. Her family has never been very accepting of me and her dad especially has never liked me. He has always kind of made fun of me and not respected me. I just need some advice.
<bot>: Girlfriend's dad who never liked me walked in on us having sex. Swore at me in the driveway to never come back again.