I am afraid that:

・ If you see me all the time, you'll get sick of me.
・ If you talk to me all the time, you'll run out of things to say.
・ If we do the same things all the time, you'll get bored of us.
・ If I'm too nice to you, you'll take advantage of me.
・ If I'm too mean to you, you'll drift away from me.
・ If someone else gets your attention, you'll ignore me.
・ If you meet someone new, you'll leave me.