@girlgirlgirl03,
I'm sorry to hear you miss your boyfriends presence and therefore seeking romance else where.
It happens but you might want to consider..now if committing your self to a truck driver who is gone for long periods of time will work 4 you. For some, it can and does. For others, it does not. It really depends on YOU. So that may be the first thing to think about.
Secondly, If the guy you were talking to really liked you and was serious about you he would have replied based on my experience UNLESS logically he was able to separate him self from his emotions and thought that investing in you was not going any where since you were not reciprocating the same as he. That my dear is actually a mature thing to do. However, I don't really know him so in reality it could be some-thing totally different Perhaps, he chose to move on.
Thirdly, my suggestion would be to take it easy. Pushing too hard or being to forward might push him away even further. Especially during this time. Believe me, I know it's not easy knowing that you could totally lose him to that other girl but try not to let your anxiety get the best of you. RELAX take a deep breath gain your confidence back with positive thoughts and positive affirmations and keeping your-self engaged and occupied with things that you enjoy.
My last suggestion, if you still want to pursue this other guy, is to play it friendly Be honest, open and genuine about it.
"Hey you, haven't heard from you lately, hope you're doing okay. Miss you"
and then maybe follow that message with....
"btw sorry for being so flaky, it wasn't my intention to make you feel like I wasn't serious about you ...just have a lot going on right now ...hope you understand"
Casual, friendly but not too friendly, firm but not too direct ...give him some space after...if he doesn't reply LET IT GO.
Hope that helps my darling.
Good luck!