Take the initiative and invite them to a virtual lunch or coffee. When they come, make it fun, have some activities on Kahoot to share with them. When you sign up with Kahoot, make sure to select socially. Smile when you are in contact with them, virtually or in-person. Make sure your smile is visible if you are wearing a mask; your smile needs to be wider for them to see it. Keep friendly eye contact, so when you say, hi, make sure to look them in the eye in a friendly way. Lastly, don't dwell on the past, it is bygone. Move on, so that they can move on too.