Have I made a mistake?

I don't know if I have. I want to keep making this mistake but at times, I wonder if I'm just refusing to face reality.

"My friend's right when he told me that being in a relationship is tiring"

My heart sank when I heard that. He explained what he meant, and said probably "tiring" shouldn't be the word. But I couldn't take anything else in. The word "tiring" kept appearing in my head and it has an effect on the amount of faith I have placed in our relationship.

I feel that I am trying to avoid talking about certain things to him. I try not to talk about next year, try not to talk about plans, try not to talk about the future, etc. I keep thinking that as long as I don't talk about it, I will feel happier, but at the same time, I know for the darn fact I'm just trying not to face what's coming up. Yes, I feel more and more insecure.

And many other things are trying to make me feel more insecure about the whole rship too.

Is there anything I can do to feel more secure, to feel that I haven't made a mistake, or even if I did, have greater courage to continue making this mistake?