Just saw my daughter having sex

So I’m not sure if it’s jealousy, but I am having a hard time dealing with my daughter having a boyfriend. He’s actually a pretty nice kid and very respectful around me and the wife.
This is a true story so bear with me….
So the other night we were all watching a movie and it ended so me and the wife went up to bed. We left my daughter and her boyfriend downstairs. We got all ready and I was hoping for some relief, but my wife was tired and she just rolled over and went to sleep. I’m lying here all hard and thought fuck it, I’m going to the den and jerk off to some internet porn.
So I’m walking downstairs and I hear my daughter almost begging. I hear her literally asking her boyfriend to take out his cock. He is saying “ no, your parents are upstairs, it’s wrong “ . But she doesn’t care at all. She keeps rubbing his crotch and you can tell he is hard under his shorts.
i sneak down the stairs and I have a pretty clear view of them. I’m thinking of coughing and make some noise, but then He says “ ok real quick “ So all of a sudden I am seeing them both get naked and start kissing and touching all over.
I am now frozen and just watching them go at it. She gets in her knees and starts sucking his cock. I am shocked how good she looks with a cock in her mouth and how well she takes it down her throat. She is gagging and drooling all over it. All I can think is how I wish that was my cock in her mouth.He tells her he is going to cum and she stops right away. She gets mad and says he better make her cum and she pushes him down and jumps on top of him. No condom needed which made me cringe.
So he is lying down on the floor and she is riding him hard. She’s tweaking her nipples with one hand and grinding her clit with the other. She tells him toast till she cums then he can fill her pussy. Right then she looks up and she sees me. We make eye contact and she can obviously see that my hand is in my boxers. She doesn’t stop, but seems to go harder, then I swear she smiled at me.
Then her boyfriend says he’s cumming and cums in her and she looks at him and is pissed. She says she wasn’t close yet. She continues to grind down on him, but it was over. She looks up at me again and I turn around and leave. I go to the den and shut the door.
I hear them talking, she’s mad at him and he leaves. It’s silent foe awhile and I think she must have went to bed, so I take my aching dripping cock out. I taste my precum and start searching for some porn. I’m stroking slowly and then I hear a knock. I flip my laptop down and quickly put my cock away.
It’s my daughter and she asks if we can talk. My heart is racing. She had tears in her eyes and says I’m sorry. I play dumb and say for what, She then comes over to me and sits in my lap. She says that she knows I saw her tonight and she shouldn’t be doing that when I’m in the house. I told her it wasn’t good judgment on her part.
She then asks what I’m doing in here and why aren’t I in bed with her mom.
(I’ll continue if there is more interest)