Why is he all of a sudden leaving me on open?

I met a guy on hinge and we have been snapping each other all day every day for about a month and a half. We are each others #1 friend on snap and we've FaceTimed a few times. He always responds super quick and always asks when we are gonna hangout. Always tells me how pretty I am and never makes sexual comments about me or is inappropriate. He said he's willing to drive the 4 hours to see me and stayed up all night to talk to me a few times. I asked him to hang one day and he said he would try to get coverage for work so I could come see him but he couldn't get coverage. For the next 2 or 3 days after that he's been leaving me on open on snap. I don't snap him again, or if I do I wait quite a few hours. I know he has work but I can see he's still snapping other people or posting to his story. He always seemed so interested up until now but nothing with my behavior has changed so I don't know What happened. I want to ask him if he's still interested in meeting up with me but I don't want to sound crazy or clingy since its only been about a month. How do I ask him or figure out where he stands when it comes to me?

tl;dr in bold

Any advice help, thanks!
Why is he all of a sudden leaving me on open?
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