What are the things to watch out for and to test if the guy loves you??

We been together for a month , things r goin well so far n he started sayin those 3 words to me. i feel like he means it when he said that but i kinda need some more reassurance. i am wondering if you guys could give me some hints,tips n some tests i could try on him to see if he loves me or nt. thx in advance!
Answer
Honestly i dont think u can fall in love in a month but i guess it can happen. i think a month is wayyyy soon.u should ask him if he knows what those 3 words mean?