Search Results: using me for phone sex

Now that I think about it, I wonder if my ex was bad company. We only dated for a few amount of months (if you’d even call that a relationship). It was long distance and we met online, he drove across the country for a living. I only saw him averaged 2x a month in person. We went on a vacation and split right after. Here are a few things that somewhat stand out to me as red flags:
1) He would bring up his exes rather often. And I brought this to his attention. He said with this driving job taking place right after HS, he did not have a lot of opportunities to socialize and the only relatable opportunities were with the women he dated at that time.
2) He told me he “loved” me after only a month. We spoke on the phone for hours everyday and met up in person a few times prior to this BUT in my opinion it was too soon.
3) He was never nervous, he seemed to lack emotion.
4) One time when we met up, I was using his phone to use safari and search something up. We “deleted” the app together after things were “official”. When I searched the browser, the website for the dating app appeared as “recently viewed” I believe.
5) He didn’t want to wait till marriage to have sex. He was eager to be intimate. After he told me he “loved” me, we had sex for the first time shortly after.
6) He was rather friendly. Very blunt if he told me he was checking out another woman. Told me of women he used to socialize with prior to talking to him. Seemed to make friends easily.
7) Moved on rather soon after things broke off. We ended things earlier last year and around three months later, he posted a new photo with another woman and they’ve been together since. If he was official with this chick so soon after splitting, I wonder if they were talking while I was with him.

Please read all and tell me your opinions.

My boyfriend is on the military and lived on base. You need military id to get on there. He’s moving off base into a house and living with 3 other guys. I found out my boyfriend cheated on me by having phone sex and flirting with other girls on Snapchat. He told me he cheated on me because I still had feelings for my ex and he thought I was going to leave him at any moment for my ex. He also has been cheated on in his other relationships. He deleted all those girls off his Snapchat to show he only wants me. Should I be scared that he’s moving into a house? by the way I use to have feelings for my ex in the beginning of his and mine relationship but I don’t have feelings for my ex now.

They had sex for one time in 2007 after my fiance attempted suicide for his ex. According to him he was too week physically and total activity of the intercourse lasted only for 3 to 4 minutes. I don't know if it is possible or not. But I have now way to verify it.

His ex ended the relation in 2010. When my fiance cam abroad for PhD in 2012, he used to focus on his PhD only. But his ex used to text him after few months to know about his status. He used to reply but never initiated conversation from his side. According to him he does not have any feeling but he used to reply her to understand why she was contacting him. Then she asked his phone number and talked to him around 20 times in 5 years (according to my fiance). Then the girl got married in early 2017 and she informed him about the marriage.

My fiance finished his PhD in the end of 2017 and added his ex name in the PhD thesis as acknowledgement. When I asked him why did you add her name as you don't have feeling for her; he replied that he does not have any feeling for her, but she was in his life for a certain time, that's why he added her name along with all other friends' names and family members' names.

The girl contacted him even after she got married but he did not replied. Even she contacted him few months ago, but he did not reply as the girl is now married and he did not want to ruin her married life.

I added this details to explain what he explained to me. Please give you opinion and let me understand and take a wise decision. I want a happy married life with no worries. I want to trust my soulmate.