Cry when my boyfriend leaves?

I have been dating my boyfriend for 1 year and 3 months. In the beginning whenever he would leave I'd cry a little but I knew I'd see him in a few days so I'd eventually be fine. We've seen each other every week since we got together at least 2-4 times a week (sometimes more) Yet, I'd say 75% of the time I still cry when he leaves even though I know I'll see him within the next few days. Does anyone else get like this when their S/O leaves?