Try mobile sweet honey
The first few chapters
I love it n its very cute!
read it, but now that you mention it I kind of want to read it again
How about
http://www.mangago.me/read-manga/secret_connection/
It's a shounen ai but there's also the dj for it
http://www.mangago.me/read-manga/secret_connection_dj/
try this one too
http://www.mangago.me/read-manga/otokokemono_desu/mh/c001/
I suggest the first chapter though if you're looking for seme going blushie blushie
And this one too!
http://www.mangago.me/read-manga/amai_kaori_ga_surun_desu/mh/c001/
sorry for commenting so much (￣∇￣")
most of the time puppy semes are like that. here's one http://www.mangago.me/read-manga/kataomoi_no_nouki/
I'm looking for a yaoi where the seme loses his cool around the uke. Like he starts to blush and get kinda cute when he is with the uke