Alex and I have been communicating all day after we both extended an olive branch to each other. That is one of the problems with social media, things can flame up must faster then the old days. Instant communication is not always good. We have 'kissed and made up.' We both agreed that research is the most important thing any of us can do. Staying away from the crap pile does a body good.
People who have had a fallen out should just reach out and say they are sorry. If you have a family member you have not spoken to in years, pick up the phone now, and tell them you are sorry. Even if you don't think you did anything wrong, just do it. The other person will probably be willing to bury the hatchet. Give it a chance.