Divorced Parents...moms Got a New Guy Now! Help!

I'm really confused on how to feel about this whole thing so i decided to confront some of you on here to see how you guys would react. Here's the deal:

My Dad moved out last June 1st (right after i graduated). Their divorce wasn't final up untill about, probably a month ago. She was hanging out with this older guy thats 53 (she's 43 as of the 13th). She said they were just friends and i didn't believe her cause they hung out quite a bit and always talked about him. She met him on the internet. Now as of TWO WEEKS AGO she's been talking to this new guy. She decided not to spend her birthday with her kids but to spend it with this new guy. K whatever, is what i told her. They have hung out quite a few times now...at his house, caribou coffee, bowling tonight. But last night she decided that instead of going to the football game like they had planned, they decided it was to cold out to go. So she just decided to have him come over and they were going to watch a movie. Whatever! So he comes over, walkes in the door and i hear "hey hunnie *smooch*" and i'm thinkin ok GREAT FIRST IMPRESSION! (AHHH just talking about this makes me want to just hit someone). She talks about how special thie guy makes her feel, they talk 3 times a day on the phone, she has some love song for a ring tone when he calls her, they say they love each other, i don't know how to react to this. I don't want a SECOND DAD! But anyways when he was over here thats all i kept hearing was *smooch* *smooch* *smooch*!! It made we want to vomit. And another thing i heardwas something that sounded to be like her patting her on her butt". This just isn't something i want to hear or see! I mean come on! Have so frickin' respect for us kids. (He doesn't have any kids so maybe he doesn't know). He has been married twice already. But my mom seems to think that they are going to be together for a long time, i mean COME ON MY GOD its been like a month since you frickin' met him! But they watched the movie and as soon as my bf got off work he called me cause i told him about it, he told me i could come over the second he got off work! So i left and didn't say bye or anything, just left. So my mom came home from work today and was like what do you think of him? And i told her the truth! I told her that i didn't like him and that i thought that he was fake! Because thats what i thought and i wanted her to know and the only thing she said was 'that makes me sad'!

I just want to know if this if normal? How would you guys/girl respond to this kind of situation? Am i over reacting? Or even if i posted this on the wrong forum.

Just anything would be sooo helpful. I'm pretty much getting really strressed out for some reason...its like my body is reacting really weird. (And plus i just switched my bc, if that could have anything to do with it).

Oh yea and one more thing before i end my life novel...before she started 'meeting' any guys she asked if i cared if she became 'happy again' and i said no cause i didn't think that once she actualy met someone that i would act like this.

I don't know what to do!