I broke down once in front of a girl when I was a late teen. We had a weird relationship. She was definitely my closest friend in our whole group, we were always more comfortable with each other than anyone else in that group. Sometimes we would leave early so that I could drive her home and we would pull over a couple of blocks away to talk or goof around sexually in a really adorable yet stupid way (Basically hand stuff, groping, kissing all while doing our best to give each other hickeys) and sometimes we'd just give each other massages. Don't focus on this part though.
Anyway one week life was just throwing everything in my face. Started with a girl hurting my feelings and doing her best to tarnish my name, then my dog died, I got my first ever written warning at work and on the same day my first ever ticket, I stepped in dog shit, then my favorite aunt died and finally I was told by my mom that she wants to divorce my dad (They worked things out :) ) For an 18 year that was a lot to handle.
Any way me and my friend were hanging out and after a week of not telling her pretty much anything other than joking about the stuff that was happening to me I finally got serious and told her everything. She never broke eye contact, she let me vent and when tears finally came she just grabbed my hand and told me to continue. After I told her everything she just fucking held me. It wasn't like a hug, I finally felt like I was being held. She wouldn't let go probably because she knew I didn't want her to. We stayed on her stairs with her just holding me for at least 10 minutes while she just held me and made me feel so freaking loved and safe.
A year or so later we talked about that night while drinking together and I told her all about how much that meant to me etc. She told me that when she saw me that that night was the first time ever that she truly felt scared because seeing me like that she finally felt helpless and that she was so used to relying on me and even criticizing some things I did in good intentions and she felt fucking horrible. She felt that after all the shit I did for her she should have been better prepared for that and should have done more. She told me it has kept her up at nights.