Not serious?

[jackass]

I think the reason is not enough to say that you ain't serious maybe you're mind is just focus on something else rather than him.

[1nytstand]

Probably yes, if your mind is into somewhere else then don't bother thinking about him unless you remember something about him.

[Tastyrese]

I do believe that her mind is just focused on something else and we don't have to think about our partners all the time.

[rumdrum]

I think this could be a sign that you don't want your partner anymore that's why you seldom think of him and you don't want to get serious with him anymore.

[BunnyPeachShang]

Is that so? I don't know that it could be a sign but at least she should feel it rather than just thinking about it.

[Movievestre]

I'm guessing that this is one of the things that you feel right before you decide to break up with a girl?

[Snugglebear]

There may be things that preoccupy your mind most of the time but you cannot claim you are not serious with your partner anymore after some moments of barely thinking about him/her.