I honestly and truly believe that I was/am in love with my ex, but lately I have been thinking that part of the reason I am still feeling a bit down and want her back is simply because I cannot have her right now.

How do I address this issue?

Thank you.

I think a lot of people deal with this issue, it's human nature. Take some time for yourself in order to get you mind off her a bit; have some fun, date, and consume yourself with "you" time. More than likely after you give your brain a rest from her and focus on you this feeling will go away. You just have to find a way to move on, especially if there is just no way of getting her back.