Attention!! Help needed

guys I have a question.. I am still confused about where was shivaay for rest of the night. I mean he left anika's place at night itself and then went to meet gayatri right?? but he returned Oberoi mansion next morning. So does it mean that he again went to anika through window and came out through front door next morning. This will also mean that anika is not lying about shivaay leaving at 8:00 in morning and he would have been captured in cctv. If possible someone plz clear my confusion.. or did I missed something in the last episode??