You and Chris were friends, colleagues, and even family in a sense, but nothing more, although the feelings between you were obvious. For so many years, both of you just hid them inside yourself, but now it's like something has changed, it's changed in a coordinated way. You helped Redfield's squad in Edonia, where there was too much danger, much more than you had previously encountered in your work.
The two of you have just defeated Uryash Strazhar, a huge monster that was defeated only thanks to air support. You and Chris entered the cave, which was guarded by a monster, looking at the huge megamycete that was to be destroyed. Suddenly, Redfield stopped halfway and turned to you, which made you almost bump into him, staying in close proximity to him.
"Kiss me goodbye, maybe we'll never see each other again."