Been working all weekend to help finish a work project. We won’t get overtime (nature of industry) and I have been working until midnight for the last month and most of this weekend - fairly junior as well, but no complaints. My male colleague, same level as me, asked if I would do a couple of his parts for him - I agreed and took them off him, sent them back and assumed he would cc me into the email chain we had with the bosses. He didn’t... I asked if he had sent the pack of work and he said he already did followed by some chat about “haha I don’t even know who’s doing what now, it’s all so confusing”.... I saw red. Was polite To him but separately emailed my bosses with my work, saying that I wasn’t sure if they already had it but here were the bits I had done, apologies if this had already been sent to them. Will blame on lack of communication/cc with colleague if asked about it. I’m so annoyed! I would never do that to someone and that’s 5 hours of my Sunday I won’t get back. I’m still in front of the computer now. Did I handle it ok? Why does it tend to be men doing this to women? My bosses are really busy so probably won’t give two shits/even notice which somehow makes it worse!