Babydaddy problems.

Soooo let me start of by saying that my babydaddy hasn’t called to see my son for years. Now he’s hmu because his girl dumped him and asking about for his son. Idk what to do. My son wants too see him too. But I’m scared he’s just going to walk away from him again and hurt my son. U know my sons feeling are going to get hurt he’s 11 . What should I do?