DomXZ said the most important things.
Just a little hint: running is fine but if you are overweight, it’s the hard and eventually even dangerous track. Weight loss is priority 1. So instead of running start walking first. At least 3 times per week. Start small, something like 30 minutes. The pace should be high, but still in the range that you are able to have a conversation while walking.
After 2 or 3 weeks, start to increase the training duration by adding 10 minutes every 2 weeks until you are at 3x90 minutes per week, independent of weather conditions. No excuses besides severe sickness tolerated.
The fat burn starts only at 40 minutes, so the longer you walk the better it is. Over time, your walking speed can be increased as endurance starts to raise too. Keep a log and, if available, track your walking with a GPS meter on your cell phone.
Your weight will reduce quite fast that way. Try not to loose too fast, it’s not healthy neither. A rate of 3-4 pounds per month is perfect.. and drink a lot, but only water!
When your BMI is under 25, slowly start to increase your speed to running pace, but still walk if you puff too much. If your joints protest because of the unusual stress, respect that body signal! Replace walking by swimming, by keeping the same schedule.
Walking at a rather fast pace is the simplest and most efficient way to burn excessive body fat and gives you the same endorphin as running. If, and only if, it’s done in nature and not in the sterile environment of a fitness center. I don’t know why, but nature seems to have an impact on the soul too.
Believe me, I am able to walk away from any dark clouds who threaten my soul and after 3 or 4 hours (don’t compare to me please, I walk since my teen age) I come home relaxed ad happy. I even instrumentalize it in business, when confronted to a difficult problem I go for a walk and come back, sit down and the solution simply IS THERE!
I know it’s complicated for City Slickers, especially commuters who use their cars. But try to find the loophole, giving you the needed time for that kind of training.
I challenge you: within the next 3 to 5 years, you will get so fit that you will be able to outwalk me. My actual performance standard in walking (not running!) is 8 kilometers per hour in average during 3 hours, 6 kilometers per hour with a 15kg rucksack during a full day of 12 hours hiking. I want to precise that I am not bragging, it is simply the result of permanent training over years (3 times a week 2 hours, not more!) and I am convinced nearly everybody can get to that fitness level independent of the starting point.
And a last thing: that girl sounds like she has a good heart. Believe me, dick size is ways overestimated by men and being a good lover is absolutely not related to your dick size.
And now get out of that bed and walk your depression away!