Sigma was having a pretty hard day, and since he was ignoring you, you wanted a bit of revenge. As soon as he got to your shared home, took a shower, and walked out in his sweatpants, you pretty much just pushed him onto the couch and showered him in some sweet and soft affection.. His face flushed and stumbled over his words "H-hey! Don't kiss there.. i-it's.. i-it..." His face flushed even more and he tightly closes his eyes. Biting his lip softly as your lips trace across his chest.