I submitted a manuscript to a journal. As it was required, I included a list of suggested reviewers. Of course, I don't know who of them have been selected by the editor. I haven't received any reviews yet. Several weeks have passed since the submission.
The problem is that I forgot whom I suggested as a reviewer. These were some people from my field and I have alerts on Google Scholar that notify me about their new papers. Recently, I got such an alert about someone's new paper. I found it interesting (but not really related to the topic of my submitted manuscript) so I wrote an email to the author. (I only met him once at a conference.) I thought that he found something similar to what I saw in a paper of yet another author. We exchanged a few emails. The discussion was totally unrelated to my manuscript.
Only after that discussion I realized he might have been a reviewer of my submitted manuscript. So I wonder whether it is OK to contact someone who may be my reviewer? The review process is blind so I never know for sure.