I voted YES, and have my own explanation for why she kept on denying that she actually did love him: Every significant male in her life (and I do mean EVERY significant male) had either disappointed her or broken her heart (Angel, Parker, Riley, and Giles, to an extent), so she pretty much had a negative view of love. To make matters worse, she was incredibly vulnerable (having been reminded of her own mortality and having spent several months being nearly completely numb and unable to feel emotions of any kind). I believe that these two factors are at the root of her behavior during the majority of Season 6 and the latter part of Season 5 (as I believe that 'Tough Love' is the moment that she actually realized that she DID in fact love Spike, but wasn't going to admit that to anyone, least of all herself). In Season 7, I believe that she tried desperately to cultivate a feeling of friendship between herself and Spike in order to avoid really confronting the fact that she DID love Spike (because she hadn't done so prior, what with having to deal with Glory, sacrificing herself to save the world, and then spending the majority of Season 6 basically numb and devoid of all emotional capacity). As for why Spike said 'No you don't, but thanks for saying it' to her when she was finally able to admit that she did love him, I believe that he believed (in his own mind) that she said what she said simply because of the 'heat of the moment', as it were.