Whats your thoughts on long distance relationships???

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Im an 18 year old who was in a 2 year relationship where we were around each other 24/7 pretty much but now i just starting dating someone who lives like a 3 hour drive away,, we have been dating for just over a month now, but sometimes i find myself feeling a little crazy, like thoughts about him cheating or just missing him like crazy... I want to know what i can do to really make this work because man i really like this guy... so thoughts?, please help a girl out 💕