What does it mean when my sister's boyfriend won't introduce himself to our family?

[light]

My older sister just recently left for college, (around September) and she revealed that, oh ho! she has a boyfriend! She wasted our summer away making my mother drive her 2 hours away to work, just so she could see this bastard. She was excited to move away for college. She even enrolled herself a year early instead of taking another year at community college EVEN THOUGH WE CAN'T AFFORD IT AT ALL AND WE'RE DEEP IN DEBT NOW AND ARE TRYING TO AVOID LOSING OUR HOME, thank you, sis. She followed him to the university so she could be with him when she enrolled. Might I say that she barely knows him? She only met him in passing at her summer job, and now she's absollutely smitten. She's just getting back at our parents for not letting her go to public high school, I said. She knows nothing about men. NOTHING. She's EXTREMELY naive. She will walk away with a stranger if he asks her to help him look for his puppy. She's a retard. Oh my GOD she's a retard. She loses her stuff all the time, she's an airhead, gullible, and believes everything she's told. SHE THINKS HORROR MOVIES ARE REAL. She even forgets how to spell her name when she's filling out papers. -_-;;

She says he said that he loves her. That's all. Like, he just said, "I love you," and now they're destined for marriage. Sure. Because an impossibly horny 22-year-old guy wouldn't lie to get in a ditzy, gullible college girl's pants! Right! She believes everything he says, of course. And obviously he's not cheating on her, even though, y'know, she mono after smacking on him AND THEN BROUGHT IT HOME TO ME AND BOTH MY PARENTS. Of course I wouldn't have gotten mono, because I'm not a complete idiotic slut, on my own, or my parents, because they're in a stable marriage. I now have mono and haven't been to school in 2 weeks. Love you, sis! </3

And the best part? He won't introduce himself to my parents, even after he's tried to get in my sister's pants. He avoids my father, won't talk to my mother, and told my sister not to tell him his name. He has NO respect for her, of our family, I believe, and yet she's still madly in love. My parents have to refer to that man that's SLEEPING 17-year-old sister as "that guy." (but I refer to him as "that bastard"...) Isn't he the cutest?

I know some morons are going to post stuff like, "lve hr alne &&jst lt hr lve hr lfe! <3" but seriously? Don't be a dumbass and DON'T ANSWER if you're going to say something as retarded as that. Sorry I'm being such a *ahem* witch, but I'm seriously pissed. :/

 

[K M]

don't worry about your sister. she'll learn her lesson.

and you find a hobby, stop obsessing.

 

[Alarma]

No offense, but you seem like you're living your life through hers, or that maybe you're jealous.
Don't give it too much importance. I bet they don't even think about you as much as you think about them, so why even bother? Let her make the mistakes and learn for herself. She's not going to change or stop dating him only because you don't like the guy. It's okay to worry about your loved ones, but she's 17, and at that age she's going to do whatever she wants regardless. (teenagers) Just let her know what you think, tell her you're worried, if she doesn't listen or care, then to hell with her, right?