I've read in the fandom that the office scene in 308 when B/J reunite shows love pouring out of both of them.
I see LOOOOOVE in Justin's eyes for sure.
But I really see only hurt and caution in Brian's eyes. There are soooo many scenes where LOVE LOVE LOVE's in Brian's eyes. But I just can't see it here. Brian's love's in his HEART at this moment which is why he doesn't hesitate to take Justin back. But, he's just scared and vulnerable here, I think.
That's why I was so happy to see him smiling like this just seconds later...