You must make sure a man is sufficiently hard in order to insure proper entry. Otherwise, the condom will not fit snugly, and semen can leak out around it, and into the vagina. Foreplay can increase hardness prior to intercourse.
It all depends on the type of girl. Some may like foreplay, which can help them get sexually aroused, and others may not. You should start foreplay slowly and if she has concerns or wants you to stop it is highly recommended that you do so.
I suppose it's possible, but unlikely. Since sperm needs to be deposited into the vagina and both partners keep their clothes on, it's unlikely that would happen. Then again, why would you want to have foreplay with your clothes on?
foreplay is most important before intercourse. if u want to satisfy your wife or husband then must learn foreplay and then go for intercourse, otherwise no one will satisfy either it is male or female.
well, that depends on your gender and what kind of person you are. if you are a guy then i think foreplay, blowjobs, and the feeling of the vagina are perfect. if you are a girl, then you probably also like foreplay, and you would like the feeling of the penis on your g-spot in your vagina.
Guys and girls for that matter are highly individual in their favourite forms of foreplay. The best way to determine it is to talk to them about it. If more people would discuss their sexual likes and dislikes, there would be many more happy relationships.