I do not think so, to be honest.
Angel does not need anyone to be the best they can be, that is kind of the thing. I believe Angel only beds those they deem worthy (or for information and blackmail, etc; all for the mission), but not necessarily because Angel needs someone to complete her. In fact, I would not be surprised if Angel is completely and utterly certain that needing someone else would be a weakness and only bothersome. It would give her all the more reason to consciously and unconsciously create some non-verbal statement that she is not dependent of the MC (doing this by, as I said before, disappearing from the bed before the MC is awake, and only reappearing, a few days later, when the MC is in some fancy restaurant, or when Angel feels like sharing the bed again, or when the MC’s qualities could be useful in some mission or another).
Because Angel only notices the MC’s worth when the MC achieves well during their missions against Angel, right? Impressing Angel is important if one wants to court them. That way Angel sees potential in the MC and will want to turn the MC to the ‘bad side’. And, perhaps, along the way Angel’s interest/desire for excitement is sparked?
That actually sounds a tad bit jealous in my ears, something Angel will not be until in an ‘unusual stage of investment’ and only when Angel is afraid(? Perhaps a bit too strong of a word, but I have no better one for it) to lose the MC to someone else.
Though it could certainly happen, yet I would personally see this happen sooner:
Angel: Appears at the table out of nowhere Having fun without me, I see. Since when do you go to this place, MC?
Reporter: Pardon, you know each other?
MC: Ignores reporter It is just a glorified interview, Angel.
Angel: Well, let me help you to answer the questions then, so the reporter can go homewards and we can enjoy each other’s charming company over some caviar and a bottle of champagne.
Reporter: I would prefer to -
MC: sighs deeply Why do I always wake up alone in the bed?
Angel: Oh, don’t be pouty, MC. Places to go, people to visit. You know the drill.
MC: You cannot just break into my house whenever you feel like it, you know, I need a decent night’s sleep.
Angel: That is not what you said last night, darling.
Reporter: Are you two serious?!
All the above is just my opinion and the way I interpreted Angel’s behaviour. So, naturally, that means that I can be utterly wrong c: In other words, I am not trying to argue with you, I just like to speculate and discuss, your opinions and ideas about Angel are perfectly fine, mine just differ for a bit c: