This is something to think about. Honestly, I don’t see him as a horribly jealous man, if not easily dispirited. He’s an older man – he’s lived through quite a bit and he’s more than likely used to being accustomed to everything in his life being taken from him without a moment’s notice. He’s grown used to the idea that he shouldn’t get attached because sooner or later, it’ll be gone – his family, perhaps any friendships and loyalties he had with Deadlock, Blackwatch and any relationships between members of both Black and Overwatch. Hell, even his arm was taken from him.
And while I believe that Sombra would never be interested in someone else while she’s expressed interest in McCree, I think, like her, he’s not used to expressing his feelings very well. Maybe not through anger and confusion, but through silence and distancing himself. He may grow a bit cold and take to alcohol a bit more than normally.
- Any major instances of jealousy would be expressed through avoiding Sombra and trying to calm down on his own. His pride would keep him from bringing up any concerns with her. He’d sleep in longer or leave and find a bar somewhere to drown his sorrows.
- McCree would doubt his own self worth. More than likely, he’d question his right to having someone like Sombra in his life. He’s almost ten years older than her – she’s a free spirit – always has been, in a way, just like he is. She’s beautiful and extremely smart and can flirt a mean game, even when she doesn’t mean to – it’s just how she is and it’s the way he was attracted to her. Of course she would catch the eye of other folk. And while he doesn’t like to think about it, he wonders just how long he’ll have left with her until she discovers she’d be better off with someone younger.
- However, once Sombra notes his behavior, while he wouldn’t say anything to confirm or deny her questions of his sentiments, he’d be more physical with her. Hard pressed kisses against her hairline or soft cheek, eyes closing as he lingers. When he kisses her, he’d grab her forearms, holding her by the elbows as if to keep her with him. If he kisses her after he’s partaken in drink, he’d grip her face and give her a firm kiss, mashed and awkward lips and breathing through their nostrils. She’d mistake it for passion, not knowing he seeks her lips while the doubts and self criticisms plague his alcohol-clouded mind and the low burning rage of someone attempting to steal what belongs to him-his only stable happiness- simmers in his belly.
- On the rare instances they can sleep together, his arm would be wrapped around her snugly, keeping her close to his body. He loves to press himself against her when he can, intent on almost leaving the scent of his cigars and cologne on her so that when she leaves, maybe others can catch the hint and leave her be. When she leaves him, he ensures to leave evidence of their meetings all over her body – on places only she’ll see. So that when she strips from her suit, she’ll see the marks and be reminded that he is the only one who has the pleasure of her company.
- If something were to happen while he was with her, at first, he’d let her handle the situation, as she usually does. He likes it when she handles herself – she usually says such nice things that have him feeling confident. Sombra will proudly show him off or make a show of leaning against him and showering him with affection.
- If the offending party were insistent, he’d slowly stand to his full height, gradually revealing his Peacemaker holstered at his hip while asking if there was a problem. Should they continue to harass Sombra or himself, he’d walk up to them, letting his boots strike heavily against the floor until he was less than an inch away and look them dead in the eye, telling them they have under ten seconds to get out of his sight or else he can’t guarantee their safety. This is usually enough to send most running away.
- He plays off any accusations of ‘jealousy’ with claims that he was simply defending her honor and getting rid of the trash. He’ll remain steamed for a bit but a kiss from his woman and whispered reassurances that she only has eyes for him will have him turning into putty in her hands. Later though, the humiliation of someone having the gall of showing such blatant interest in her might have him fuming and pouting in silence.
Overall, McCree doesn’t question her fidelity – he worries about other people trespassing where they don’t belong or that she’ll decide she’d rather leave him one day. And he suffers from his own hypothetical scenarios that he conjures in drunken, pitiful states.