S8E9 - is Tom talking to Rachel in the background at Arianna's birthday?

Doing a rewatch of season 8 while home sick from work and spotted Rachel talking to who looks like Sandoval at Arianna's birthday party. I've rewound several times to compare that outfit to everyone else's at the party and it has to be him.

This scene is like four seconds after Rachel confronts James for his rage texts. A lot of people have speculated that this general time period after the rage texts is when Tom and Rachel start heading toward an emotional affair. It's even more disgusting if it started at Arianna's birthday party when two days before she was talking about how bad her depression was.

I understand men and women can just be friends but knowing what we know now...