['I saw my sister after a long time. Unknowingly i got tears in my eyes', 'I am sure they were happy tears.  How long had it been?', 'They were happy tears. It was 7 long years']
That is a long time.  I am sure you have a lot of catching up to do
I saw my sister after a long time. As soon as i saw her unknowingly i got tears in my eyes