how to talk about a difficult subject

My gf (25F) and I (23M) have been dating about 10 months now, and it's been good! Recently though, it's become rather stale, and personally I feel almost forced to hangout with her. Basically, the relationship feels forced at this point for me, and I want to talk about that with her to see how we wanna move forward. Only problem is, I know she doesn't feel the same way, and hearing this is gonna really hurt her and I wanna make sure I approach the topic delicately and the right way so that it's a proper discussion and not just an argument.

Any advice helps :)