I am seeing this guy I met online. We have been talking for a month and he asked me to be his girlfriend a couple of weeks ago. Things were great. We were texting everyday. Coming up with plans to meet. He called me for the first time. Then texted saying he loves hearing my voice and he would talk to me later. It's been 5 days since the last message. I have texted him but no response. Should I call him? If I do what does that mean?