For me this was only the inevitable path when I let another man fuck my wife. Most women can't fuck a guy without having some feelings for him, I knew that, so when she said "I love you" to her lover the first time it was expected.. I knew that it was bound to happen, I saw it in her moves fucking when her lover fucked her, in the way she took his sperm both in her mouth, her pussy and in her ass, how she sucked him off and looked up at him when he penetrated her pussy or ass, she even let him ... all over her in the shower, drinking some of his ... even before licking his cock, suck and lick his balls and sometimes even licks his ass with pure pleasure in her face... She would not do that if she did not love the guy..
After two years this it is normal to hear my wife say "I love you!", to the both of us...