She went with Marcus as a couple, wearing a black color romper shorts (pretty casual) with a red color choker on her neck and he was in shorts and basketball jersey. They stayed there for about 2 hrs, mostly chatted with a few couples. Shelly told me they were holding hands all the time. I went there for 15 min and saw them together from distance chatting with a similar age couple.
She told me later that the couple they chatted with was renting a condo thr and came to his place afterwards to see his condo which has different configuration. The four of them stayed there for about 30 min and the couple left after that and she stayed there with Marcus