Hi Jpeg, undoubtably your long R means/meant something to him. Please don't feel you need texts from him to reassure you of that. It is the case already.
However, the issue with the texts (IMHO) is that he is presumably covertly sending them to you. So, he goes into the bathroom, drops you a little text, then gets back into bed with OW. He probably sent you the text because she got on his nerves this afternoon or similar.
As I have said before, I believe they are designed (he may not realise this) to keep you in the queue as Plan B. The problem is that if you value them too much, they keep you attached to him. It is far better to have a perspective of - he is living his life now. I am living mine. We are not joined. We may rejoin at some point, but there are conditions for that, which haven't happened yet.
Please keep remembering triangulation dynamics and avoid being a triangle point at all costs. He is someone else's boyfriend just now and until or unless that changes, he isn't really worthy of your valuable attention.
Take care & have a lovely weekend xx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus