Why do guys say they don't want to get attached too fast and want to take things slow, but continue to call?

I have been talking to this guy for almost 2 months, and we had the talk about taking things slow and not getting too attached too fast to avoid either of us getting hurt if things didn't work out. He just got out of a long-term relationship about 6months ago and I think is afraid of being hurt again. Both time that we have had the discussion about getting attached too fast, he has been the one to bring it up. The first time we talked about I was totally coo with it and kinda slowed down a little with the calling and texting but yet he seemed to pick up the pace! And then after about 2wks of him calling every night on his way to work and every morning on his way home, I didn't hear from him for a couple days...So naturally when I did talk to him I asked him what he had been up to? And again I get the "let not get too attached" talk...

I don't feel like I'm the one getting attached when he is the one doing the majority of the calling and texting!

I'm confused!