Advise, intimacy

So, I (male 20's) have been with a girl (20's)for quite some time now and we have an amazing relationship, but more recently there has been some internal personal issues that I dont know how to fix. I am a very physically affectionate person and my "love language" is physical touch, but for the past couple months, maybe even year, she hasn't been as physically affectionate towards me, and it sucks. Kissing has gone down substantially, no makeouts or $** in months. Its been really hard for me. What should I do?