(sorry for my bad english, I have only 14)
Hey there!
I have a "little" problem from 1/2 year...and if you might help me a little with this I'll be really happy.
So...this is about my new "dad": my parents have been divorced form 2 year, and then I went to live with my mother... after only two or three week, a day, my mother came to home with a friend...then, this "friend" continued to come at home every week-end and, a bit later, my mother told me that he is her boyfriend...
I always tried to be gentle, but he is, even today, very aloof with me, sometimes we were quarrelled, and sometimes I even hear my mother talk to the phone with him and, those calling,always end with her crying...
Even that, my mom sometimes say to me that i should call him "dad", but I can't stand that!!

Any of you have any advice?...

Well, I've never really gone through it myself, but I knew someone who did. In fact, it was my uncle's ex-girlfriend's daughter. I would ask her how it felt seeing her dad with someone else and her mom with someone else and she said she was fine with it, because they were nice, but that she would never call either one her mom or her dad, because she didn't feel comfortable doing that.

If your mom is always ending her conversations with him crying, then I don't think this guy is good for her. I think you should bring that up to her, because even if she may not necessarily listen to you, it might make her realize something. If you fight with him, I think that's very strange, especially if it's just her boyfriend. He has no right to do that. That's even more reason for you not to call him dad.

All in all, you don't have to call him dad until you feel comfortable with him maybe, but if I were in your shoes, I'd probably never call him dad.

Of course, what's most important in this situation is your mom's happiness, because it's her love life not yours. But as I said, if she's ending her phone calls in tears, then does that guy really seem to make her happy?

Hope this helped.

I have a friend who's mom had a boyfriend for years but she never called him dad.

I myself am getting a new "mom" but I was never very close with my dad and he's had a different girlfriend before. I've little interactions with either woman so I don't really think my own experiences are good enough to allow me to give any solid advice.

However, if either party is getting upset while conversing then there's something wrong, and you should bring that up. Also, if you don't want to call him dad then you shouldn't have to. Nobody can make you do anything if you don't want to. I hope this helped...

Personally, I experienced that a lot.
When I was young, my mother's boyfriends treated me like a little brother, but her current partner and I are completely different. I avoid him as much as possible, enduring his nagging. My mother told me to get along with him, but that's not possible, we are polar opposites. I tell her again and again that,we'll stay strangers, but she will always wish that we get along.
I would not call him father unless I feel strongly for him, your mother has to consider your feelings as well.

Thank you all for the advices! :D
I will try to do what you suggested me, so thank you a lot!
I was really pleased that someone read my thread :)