Looking on the internet deeply has found these results:

not sure if he is the most popular phrase on the web.

not sure if has has 10 results on the web	not sure if he 1267,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Nothing serious just when we are all out and about with friends, but I am not sure if he shares the same feelings because we only see each other with friends, ... The sooner the better; more often than not the a person who is not sure if he want be a parent doesn't want it, he or she just try to fit a common stereotype that a ... Feb 2, 2016 ... But he is not sure if he loves u or not because he does not see his future with u for some reasons that are major for him and usually in that ... There's a guy I like, but I'm not sure if he's interested. I want to find out, but I don't want to scare him off. Should I tell him or play hard to get? Possibly neither.

not sure if has has

10 results on the web

not sure if he

1267,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Nothing serious just when we are all out and about with friends, but I am not sure if he shares the same feelings because we only see each other with friends, ...
The sooner the better; more often than not the a person who is not sure if he want be a parent doesn't want it, he or she just try to fit a common stereotype that a ...
Feb 2, 2016 ... But he is not sure if he loves u or not because he does not see his future with u for some reasons that are major for him and usually in that ...
There's a guy I like, but I'm not sure if he's interested. I want to find out, but I don't want to scare him off. Should I tell him or play hard to get? Possibly neither.