I too want to know what Ian really wanted to check. Ian is getting all these new emotions ...

I too want to know what Ian really wanted to check. Ian is getting all these new emotions (?) and doing things he hasn't done before, like camping and having roasted marshmallows for the first time, which goes with how he related his experience with Jo feeling like it's his first time. It's all new to him (again?). I'm curious how their relationship is going to develop more once their feeling/attachment gets more strong.

[because we don't how it will lead it could either positive or negative of obsessive love.]