Hey @Spookums Feel free to add more thoughts as they come to you, it can be a lot writing these thoughts down sometimes.
It's really common to feel like your emotions are a burden, I'd even go as far as to say almost everyone feels like this at some point when they're reaching out to friends and family for support, so I just want you to know you're not alone in this.
Something that can help if you're worried that you're leaning too much on certain people is to look for support in a few different places to ensure you're not only relying on one person as your sole support. Reaching out here is a great step in this already.
Having said this, I do have one friend who I do tend to rely quite heavily on and vice versa, and something that's been really helpful for us is to have a talk about boundaries and have pretty open conversations about giving and getting support. Stuff like checking in on whether the other person is in a position to provide support before getting into it, and letting the other person know what sort of support we need, so one person's not feeling overwhelmed thinking they are expected to solve this issue when the other person just wanted someone to sit and listen and be a comforting presence.