So I became friends with someone through my previous job. We got on well, would meet for coffee etc and I thought we were friends. I left that work place last September and we had one brief meet up just after I left. Since then she rarely messages, taking days to reply to any messages I send and turning off her online status on WhatsApp. I have tried not to be too needy and have given space but have sent a friendly message tonight asking about meeting up and it has just been ignored. I know she has been online since I sent it but has just ignored it. Do I just give up on this friendship? Feel very hurt as there has been no explanation.