Pulse rate will generally be lower with lower muscle mass (less nutrition to move around). A resting heart rate in the mid 40's is very good for someone the age of the original poser and given he runs and only weighs 145 would be considered ideal by many clinicians. (Go research this yourself, if you don't concur.)
For someone very active, and fairly light, 46 BPM would be considered awesome by most folks in the know. My resting heart rate was 43 in my late 20's, and early 30's.
The new standard for ideal blood pressure is 120/80, which is different from the old standard of 140/90. As a practical matter, in men, with much mass, it's hard to attain 120/80 without the heart rate coming way up, and being medicated. In my personal situation, because I carry nearly 190 pounds of lean muscle we shoot for 130/80, which keeps my heart rate down. If I lower my bp further, my heart rate comes up (I still have the same muscle to keep fed.).
This morning, since I have been sick and not exercised in the last few days, but, am getting better today, my bp was 112/70, at 69, when I first got up.
Blood pressure directly can mean several things: cardio vascular disease among them, fluid volume, exercise intensity, kidney disease, electrolyte imbalance, etc.
If I dehydrate, I can sometimes see my bp at 100/55, but my heart rate will come up to 110.
There are all sorts of interactions.
Given the poster's age, and weight, his bp is probably headed towards essential hypertension, but, because he is light, and active, may involve minor diet changes. NOW is the time to do that, rather than later.
Every once in a while, when all the things come together, I can have spot on blood pressure and heart rate, but, it's tricky, and sometimes I don't even realize what did it.
Sodium needs to be less that 2G a day (try getting it there if you eat out at all.).
You need to be well hydrated. Studies show less than 15% of athletes are fully hydrated.
It's likely time to look at lipids. Our plumbing gets clogged up.
Pre-hypertension is what this looks like from someone who has been down this path, personally, Might be real easy to fix. Might not be.
Hypertension damages your eyes, kidneys, and forces LDLs onto the the wall of your cardiovascular system....bad news.
Some folks get "white coat syndrome" at the doctor, and get high readings at the doctor's office. Go buy a blood pressure monitor at Walmart. Your blood pressure will generally be highest in the evenings and after eating. Check it four times a day. If you're seeing above 130/80 on average, you need to devise a plan of intervention.