You tell her she is only yours /a certain body part is only yours. You take her when you want her... The way you want her and as many times as you want her. If she says she can meet you, you tell her to find a way. You dominate her... you own her. If she is in a relationship you prohibit her from having sex with her partner. You are very dominant but you also give her affection afterwards because this type of thing is very intense and after care is needed if you want to keep her around.
Things he does. Being possessive is basically a guy having his way with his girl however he wants. Its a turn on for some (maybe most) girls but there are a few that are not fans. means he does what he wants to her, instructs her on what to do to him and haves her in any position he dictates. Thats possessiveness. its kinda hot sometimes lol.
I'm not sure 'possesive in bed' is something that makes sense unless you're talking an orgy and he doesn't want to share her with the other guests...
More likely they meant to say dominant in bed? i. e. be the one that takes control during sex, tells her what to do, spanks her etc.
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