very good advice in here already
but to me... it's more about Tanna feelings than how this boy might interpret the text
it all depends on what capacity you want this man in your life from now on
and there are lots of options when ppl try to transition ppl to different levels in their lives
I've seen ppl become BEST friends/"brothers" with their exes (I personally couldn't
)
but if you don't see him being a friend, or close, or dealing with him on a regular basis .... I wouldn't text this go round.
there will be the right moment when you two come in contact with each other again IMO
