It's not normal to tell people "I don't love you". Frankly it's rude and mean. If you aren't in love, but think you might eventually get there, you might say that you aren't sure yet where it's going, you want to get to know them better or something. I am yet to meet a person who would just say "I don't love you" unless intent is to let you know there is no future there or to hurt you. And mind you I am very blunt, yet that's not normal (or normal in a sense of letting you know he is not that into you)

Please don't disrespect yourself by hanging on to this dude. There are others out there. You deserve better. And don't worry about not having experience. You can always tell people that you were busy with other things and didn't have time to seriously date much.

You feel anxious because this relationship is wrong for you. If it was warm and loving connection, you wouldn't be anxious. Get rid of him imho