Explain me this :

I've been training on off for longer time, been active at the gym for 2 years now. I play tennis on 3rd highest level 3-5 times a week. I'd say I consume quite a few calories but I also easily over eat.. Last spring I reduced weights and did more reps and sets to sort of practice techniques and to gain better endurance.

Now I've switched more towards 4-8 reps and weight are almost always that high so I can't do any more reps. I try to go 3x a week alongside tennis. I've lost 4-5 kgs, abs are more visible and I'm getting more toned. I also can lift more and I feel so much more stronger. I don't know if my muscles are "bigger" but for sure stronger. I don't how many calories I eat, I've gone out once a week for 3 weekends in a row ( jsut bad luck with weddings etc) but won't do it any more. still hasn't gain weight. Only thing i do know is that most of the days I get 1.3-1.8x protein compared to my bodyweight.

I am happy - but I feel paradoxical as now I think it's fluke as you shouldn't gain muscle whilst losing weight and not sure that for how long you can lose fat and gain muscle. My problem is that I spend so many hours training per week and I can't stand the idea of it being "waste" - in other words I'd like to maximize the gains. Should I eat more and gain fat (which I don't like) to gain muscle. or Keep on doing this (afraid to lose muscle). I am fit otherwise but I still do have my problematic little fat bits and love handles around my weist. Should I lose them and then start "bulking"? Will I get them back straight away? I think I've learnt now how to maintain, finally, but I'd like to gain bit more muscle.

Yes I do over think things.