everyone tells me to stay with him or I will end up alone.?

You need to break up with this guy. It is not fair to him to keep seeing him and leading him on. You already know you have no intent of turning this into a life long commitment. The longer you keep seeing him, the more and more HE will see this as a long term commitment. The more time of his you will waste, the more emotional strain you will put on him whenever you do decide to end it.

This is what your family should be telling you instead. They are being selfish for wanting you to stay with him when they know you don't want to. They are selfishly trying to obtain for you what THEY want instead of realizing and supporting YOU going out and living the life YOU want.

Again while all this is going on, it is the guy you are seeing that will innocently endure emotional pain in the end.

Just end things with him. Don't care about what people say. Do what you think is best.

Make your own decision.
Stay with him if that is what you want

If everyone around you encourages a relationship I would recommend that you listen to them. Relationships take work, but they are definitely worth the trouble if you get into a good one. This whole "it's your relationship and no one else's" stuff is only true to an extent. The reality is that a great relationship improves the world around it.

Talk to your BF about your emotional needs and if you are clear and concise, I'm sure you and he can come up with a good solution!

Why does "everyone's" opinion matter to you when you know you'll be happier single?

Ask "everyone" why they want you to be miserable?
ask "everyone" why is your private life their business

The wrong relationship is far worse than no relationship