Consider that your current weight is the result of your lifestyle and habits (with the exception of health complications that can otherwise explain it). A diet is a temporary change in behavior to achieve a desired result, but if you go back to your previous habits, you won't keep the weight off for long. You need to build healthy habits around food and exercise, and stick to them after you've met your goal.
Take a hard, honest look at your diet. Find healthy foods that you like, and replace unhealthy foods with them. Try to cut down sugar, it's empty calories and works like a DRUG, which is why it's in everything. Avoid processed foods, and if possible, cook your own meals. Cooking with fresh, simple ingredients tastes better and is vastly healthier; you'll know what's going into your food, so you'll have a lot more control over your diet. Cutting out processed foods packed with preservatives, nitrates, artificial flavors and food coloring will have added health benefits beyond weight loss. Also, cooking is a great skill not just for yourself, but you can also use it to impress ladies.
Food is your input, now take an honest look at your output. How active are you daily? Do you have any routines? Do you walk, hike, bike, run, swim, play sports or martial arts, dance, climb, or otherwise exercise? Do you do any manual labor around the house, or have a job that involves physical work? It doesn't take a lot of exercise to maintain a healthy baseline. Do you sit a lot? Consider a standing desk if you spend a lot of time on the computer. Walk or bike instead of driving; humans are made to move.
Again, find things that you LIKE that you know are good for them, and work them into your habits. If you lack the willpower to do it alone, join a class or find some friends with similar goals, and keep each other motivated and accountable. Losing weight is such a narrow goal, start with small changes to your habits and work your way up to bigger changes, so that your lifestyle evolves into a routine that keeps you healthy and fit.
I'd also second the recommendation for HIIT workouts; they're quick and effective. For a while I was doing some of the 3 minute workouts from the
FightTips youtube channel every morning, sometimes doing them 2-3 times in a row.