Finally, you may choose to link your profiles, which involves one of your sending an invitation to the other, much like a friend request. This is best reserved for solid relationships -- if you're in the breakup/makeup cycle, it's smarter to reveal as little of this as possible to the coworkers and cousins keeping their eyes on your bidness.
You don't know how to introduce him when he's not your boyfriend but more than a friend.
Skip the descriptor entirely and say, "I'd like you to meet John." The fact that you don't refer to him as a friend or boyfriend is typically telling enough. Your body language will likely fill in the blanks for people. If that's too ambiguous for you and you want to mark him as your man, call him your date.
You can't get that guy out of your head -- and there's no room for anything else.
Ah, sweet infatuation! First off, enjoy it, 'cause it's not going to last long. Every new couple should have some time of mutual obsession -- there's nothing wrong with getting caught up in new love as long as it doesn't keep you from eating and going to work.
If the man on your mind is an ex-boyfriend or a crush that never came through, give yourself a couple of weeks of mooning around and then pledge to pull through. Work is a great distraction -- ask for extra projects, focus on a complex task, and put in overtime. Now is not the time to take up mindless activities that will give you time to daydream. Before you know it, you'll barely remember the guy -- and you might get a promotion.
You want to know if it's okay to start calling him your boyfriend, but you don't want to seem needy or clingy.
If you've been dating for a while, he's probably got the same question on his mind. Ask him for what you want in a lighthearted way: "So, are we going steady or what?"
You have a one-night stand with a random guy while getting to know someone you might really like.
Technically this is fair game. Until you are in a committed relationship, you don't have a responsibility to be monogamous. That said, a lasting relationship can be worth sacrificing some easy sex for. You might choose to skip the hookups until you see where things are going with Bachelor #2.
You're dating a guy who lives with his parents.
When the economy is crappy, it becomes more and more common for someone to be bunking with his folks. It doesn't have to be a deal breaker -- you just need to distinguish between Peter Pan syndrome and a genuine time of personal transition.
Is he focused on working (or finding work, if he's been laid off) or school? Is he taking care of ailing parents? If so, you might want to weather the discomfort of shagging on the top bunk. However, if he's just sitting around the old homestead eating Mom's meatloaf and playing Second Life, peace out and leave him to his arrested development.
You're dating more than one guy and don't know whether to be honest about it.