My ex-boyfriend put himself on a dating website because he thought I wasn't interested

I have been seeing this guy for a little over a year. Back in August, he asked for us to step back for now. Since then, he has still been in contact with me every day. We spent some time together over the holidays, but then I was gone for New Years with family. I came to find out that he put himself on a dating site. When I found out, I asked him about it, and he responded with this: “My apologies if I got my signals crossed, or if I wasn't honest with you. You have helped me tons this past year and I am glad you are in my life. I didn't realize you were still interested in dating. Again, my apologies.” Also, is it better to say that I want him in my life or that I want him as part of my life?