All Alone...

For much of my life, I've been afraid of being alone. Being single sucks. Especially when you're far from family and friends, as I often am. But when you're young, you're never as good a version of yourself as you are when you're alone. You're at your most productive, and have time to think about improving yourself as opposed to constantly thinking about how you can improve your relationship. As a guy in a relationship, you spend most of your thinking time on porn, games (video and/or sports) and sex. One other thing is likely to be how to make your relationship better. How to keep the magic alive or how to make her happy. The down side to this is that you rarely spend any time trying to actually make yourself the best version of yourself that you can be. Everything is relative to your partner. And that's okay as long as you have your shit together when you're alone, or you become dependent on having someone else around. It's really a rare occasion when someone actually enjoys that.

(hint: this is a leech. No one likes leeches.)

In reality, even leeches have their moments of usefulness, medicinally. But that's just as rare as someone wanting a boyfriend or girlfriend who's completely dependent on them. Even beyond that, someone who doesn't know how to be alone is often more prone to be unfaithful. Without 24/7 access to their significant other, they need to go out and have someone else fill the void. And before they know it, you're hiding used condoms in your purse, and explaining what her friend Ashley means when she says you make her boxers feel tighter.
Being alone is hard. It sucks balls. I've come to grips with that. You need to too. But when you get past all that, you realize that you're a really awesome person. I've been going to the movies alone for a long time. I never argue about what food to get, or what movie to see. I never spend too much, and I always get some at the end of the night. It's from me, yeah but whatever, you get what I mean. You have the same interests, you like the same foods, you want the same things, at the same time. You're funny, you're interesting, you're easy to talk to. You're fucking awesome. Enjoy it. The rest will come to you naturally.