When you begin to discuss marriage and a family together...
When there is kissing and heavy touching.
No she doesn't, but she's currently dating Adam Lambert and possibly getting serious! >;p
It depends on the situation. You should never take your friends girl from him, that's just low. But if your friend and this girl stop seeing each other before they are really serious, talk to your friend about it and see what his views are. If they continue to see each other and start getting really serious, try to find another girl to keep your mind off your friends girl.
Yes if things are getting serious between you that is something he would consider.
Usually a girl
VERY serious!
kiss her on lips
If she likes you then hang out, and hook up maybe if she wants to. And then talk to her about possibly getting together. If she wants to then do it. Set rules.
No it cannot, in fact calcium is known to help prevent serious health complications in pregnant women, so is actually good for pregnant women.
It's a romance thing that some guys do. Giving you respect or getting closer to you may be the reason. I know a girl that called some boys "sir" when she was really serious in an anger way.
It's hard to generalize, some guys are serious and some aren't. It's a matter of maturity and interest. When I guy lives with a girl, that's pretty serious. When a guy marries a girl, that's serious. When it's just talk and promises, you can't be sure: actions speak louder than words.
Getting serious