Why won't she get my texts?

ok me and my girlfriend text a lot to each other but the thing is when I text some how she isnt getting my mgs and its making me mad
any help???

. . . sometimes it just happens? or maybe the plan ran out. texting isn't cheap.

I have unlimitedd texting thoo???

Umm it could be an outage in your carriers network! if you have nextel they still sometimes has the trouble with verizon. but most likley its just a carrier issue.