how can you know that a man loves you and he is not just making fun of you?

I am a 23 year old lady, I have mate a man who seems to be loving me but im not sure.

Ok it started that the man saw me somewhere but did not have a chance of talking to me. then he realized that i was a friend to his friend. He then asked the guy how he could meet me the gay went on and gave him my phone no. which he used to call me. he then asked his friend to brought him where i was of which he did.

When they came, the man who intended to be loving me just said hi. and kept quiet, his friend started to pressurerise him to say something but he ended up saying he have already completed.

Now the guy calls me very late in the night to say good night and very early in the Morning (5.30 Am) so say good morning without saying anything. I asked his friend what this was all about and he told me that the man loves me but he is shay to mention it, again he added that he just have to pressurerise him for him to call that is in the morning & evening.it is now three weeks since this started.

dears brothers and sisters what is this?