Let me be the first man to reply here.. 😊

Don't worry, it is not your fault if it is as you say. (there are always 3 sides of the story, yours, his and the truth) 😉
Now, i work hard too and go on long business trips where i don't have access to internet but i always say that upfront or even try and send a message from where ever i am. Understand this, the confusion about being online can come from the following example - my computers are always online at the office and this site is open giving everybody sign that i am online / but i am NOT! So, don't trust the online/offline signs. The best is to talk through before judging anybody. I had a same misunderstanding with my girl from this site (and i am sure she is reading this, hello baby 😊 ) and we just talked this through and she is still coming to visit me.. 😊
The bottom line is, talk through before you judge and make a mistake. He/She might be really "THE ONE"! On the other hand, be very careful as there are lots of sick people and they can pretend to be the best and most honest. Just take it easy and relax. If is meant to be, it will be.. 😊 Good luck..