Q: Firstname, I really like being with you. Would you like to go with me to the movies tomorrow evening?
A: ?????? what could she answer here? Multiple possibilities:
gasp (little jump of her heart).. I like being with you to.. I'd love to go to the movies with you. (pretty obvious what's going on)
Or: sure, let's go to the movies (ok, we're on a friendship level or she's just not catching on or playing cool)
Or: I can't (and you never hear from her again)
And any possible scenario inbetween.
(important information is being obtained here)
As demonstrated in the example above, casually mentioning he likes being with her can provide him with important pointers how she feels about him and provide her with important pointers where he's heading to.