Were Trip and T'Pol realy, truly in Love? They had a mating bond imposed on them for no other reason than due to scratching their itch. But T'Pol could often be dismissive of Trip, as when Surak's writings were published. And Trip would often be dishonest about his feelings, outright lying to her, to not appear weak ... as though he needed their relationship more than she. We wanted them to be "Truly Star Crossed Lovers," but I believe they were just good friends with great benefits.
Even when Elizabeth entered the picture, what's Trip's first reaction? "T'Pol, we're going to discover the truth behind all of this ... together"??? No!!! Whilst he does not accuse her of this outright, he firmly believes - and this is in the final thing - that she's been somehow deceptive regarding having been pregnant, somehow. He quickly realises and accepts that would've been impossible, but his initial feelings are those of distrust. Distrust of the woman he supposedly loves. They did love one another, but it wasn't as strong as their mating bond, itself. It was more loosely woven ...