How can i know if he loves me as i do.. although he didn't express his feelings?

I can feel it by looking in his eyes, he is so in love with me, he is too jealous it's so clear by the way he is talking to me for example: if he saw somebody trying to speak to me or care about me it's makes him very upset and depressed and sometimes asking me about some details for example: about my Managing Director how old is he? if i told him i am not sure about his age, he keeps on asking more than once , is he over 20? is he over 30? or more?? then he is asking does he has a wife?????? and try to convince me that he's asking me a casual question!!!!! many situations happens each day he is too jealous but he didn't ask me for a date... but he gave me hints only for engagement...and after that something happened i don't know what is it, i saw him very confused and i felt he is nervous & starts to treat me formally!!!!!! so i felt he doesn't want commitmenet with me & he knows that i am in love with him and he saw me in a very bad situation,, i was broken and he felt howmuch i was depressed then i started to ignore him totally & front of him he saw a guy has a crush on me & trying to introduce himself to me & we chat and laugh for a while ( he didn't expect this reaction from me i felt how much it was painfull for him to react the way i did ( the same way he did with me) then he wrote on the face book "" is single"" this word really hurted me but i i kept in ignoring him for a week then i started to care again ...and he was totally happy when i cared for him again but tell me....... what should i do???????????? i am so in love with him.... i am sure he has feelings towards me.....................how can i make him open up with me?????? he is sure of my feelings.....and i am sure he is sooo in love with me as i do..... but there is something i don't get it, pls adults give me your advise we are daily seeing each other and you know how it's sooooo painfull for me and for him.................