Boyfriend says he loves me but doesn’t know if he’s IN love anymore?

I have been with my current boyfriend for 4 1/2 years. He has very extreme anxiety and has recently started taking medication for it.

We started dating in high school. After high school in 2016, we both took a year off to work and because of the lack of time together and lack of attention, we had a rough year where we argued constantly. In September 2016, I moved 2 hours away to go to college and we decided that despite the rough year we were having, to continue to date long distance. Things did not improve and in January 2017, he broke up with me. After a few weeks, we talked it through and realized communication was really lacking and got back together with the promise that things would be worked on. It took around 6 months for his family to accept me back in after the break up. Ever since we got back together, we have been amazing. We have had lots of visits despite the distance, gone on wonderful dates and honestly we both agreed that we felt even closer than before.

In January of this year (2018) he started a new job where his anxiety really spiked. He has been acting distant on and off since then. I have brought it up multiple times and he said he “doesn’t know how he feels” about the relationship and his new job. Lately, it’s gotten much worse to the point where I have to ask if he loves me and no affection is sent unless I ask or bring it up.

Today, he was still acting off so I called him and he told me that he “still loves me but doesn’t know if he’s IN love anymore”. I asked if he can wait about 2 weeks until I’m back home for the summer and he said “I guess but I need you to understand that that’s how I’m feeling and I don’t know if being in person together can fix it”.

IM FREAKING OUT. WHAT DO I DO ABOUT THIS??? I cannot lose him and we are so close, he is my best friend and I am his, so I can’t imagine losing him. Please give any advice!