<human>: Condense the text into a few key points

My boyfriend and I have been together for about 4 years now, but due to education/career progress we have been long distance for the past 8 mo. Both of us are doing post-grad training in our respective fields, and are intending to move in together once our programs finish up. I'm looking forward to being together with him again, but I am worried about one aspect: for about the past two months, I have been under a lot of stress for a variety of reasons, and have fallen back into my old self harm habits. It's something I have done with varying degrees of frequency since I was a pre-teen, including while my boyfriend and I were together in the same city. However, it's always been pretty easy to lie about where the scars/cuts are coming from, as minor injuries are common in my line of work and I tend to be clumsy anyways. 

Unfortunately, over the last couple of months I've been doing it a LOT more, and causing wounds that are deep enough to leave more noticeable permanent scars. I'm worried that my boyfriend will recognize what that are from.

So I'm having trouble deciding what to do. I could tell him flat out what's been going on. He's a wonderful guy, and I'm sure he would try to support me and be understanding. But I worry about it changing our relationship. We've always been equals, not the supporter and the one who needs support. I think he would worry, and he might see me as someone weak, or damaged. Alternatively, I could keep going with my usual approach and lie about them. He's pretty used to seeing me marked up; maybe it would side under the radar. I've never gone into the things that are stressing me out with him, or given him other reason to think I would do this. But if I don't tell him, and he guesses, then he might be upset about the lies. He might be sad that I don't trust him. 

We'll be back together in a few months. Any thoughts on what the better approach to take is would be appreciated. Thanks!
<bot>: Self harm scars- better to tell bf what they are, or not risk spoiling the excellent relationship we have with an ugly personal detail?