i don't think internet dating is very safe however some ppl would say different. you never know who that person really is and they could be playing games with you and then it all turns out bad.
However as you are already bf/gf and he's coming to meet you...make sure you meet him somewhere where there is alot of people around. if things go well and you want to invite him to your place, i would definitely have some friends come over too so you are not alone. don't trust anyone until you've personally known them for awhile and completey trust them, until then make sure someone is always around or at least let them know who you are out with and where you are going, etc. Better to be safe than sorry.
Good luck!